Color Run Powder Safety: What Organizers Need to Know

A color run should end with tired, happy, very colorful participants. Getting there takes planning, because the risks are real and they are different from a walk-a-thon's. This page explains each one with the best sources we could find, separates what powder sellers claim from what independent agencies have found, and turns it into rules you can put on a volunteer card. It is general education, not a safety certification. Your local fire marshal, health department, school district and venue have the final word, and their rules come first.

What color powder is

Color run powder is usually a fine starch, most often cornstarch, sometimes wheat or rice starch, dyed with synthetic pigments. Products can also contain anticaking agents such as sodium bicarbonate or tricalcium phosphate, preservatives and fragrances. Switzerland's federal health office notes that some powders sold for festivals are talc-based and that some products may contain bacteria, fungi or heavy metals (Swiss Federal Office of Public Health).

The base starch matters. One supplier's "cornflour" powder is made from wheat and contains gluten, according to its own FAQ (supplier FAQ hosted by Coolum State School). Never assume. Ask your supplier what the base is, which dyes are in each color, and whether anything else is added.

Labels and claims vs. what's been found

Powder listings use reassuring words. Here is what each one can and can't tell you:

What sellers say	What independent sources show
"FDA approved" or "FD&C and D&C approved dyes"	The FDA approves each color additive only for the uses in its listing, such as food or externally applied cosmetics. Some D&C and Ext. D&C colors are for external use only, and eye-area use needs specific approval (FDA; FDA color additive summary). No approval covers breathing in a cloud of powder.
"Food grade" or "made with food-safe ingredients"	Food approval is about eating. A pulmonologist interviewed by KCRG said ingredient approval covers eating or skin contact and says nothing about whether inhaling the powder is safe, and that the lungs can trap particles but don't digest them (KCRG-TV9, 2016).
"Non-toxic"	Germany's environment agency notes powders labeled this way despite no uniform legal classification for these products (Umweltbundesamt, 2016). TV-commissioned lab tests in the United States found low levels of metals in powders from three brands whose packaging listed only cornstarch and coloring (KCRG-TV9, 2016). These were small tests of a few samples.
"Fire retardant" or "non-explosive"	In a TV station's demonstration, seven of eight colors from a brand claiming fire retardance caught fire when blown over a flame (KWCH, 2016). A peer-reviewed study found that how easily colored powders ignite varies between manufacturers and even between colors from the same maker (Castells Somoza et al., 2023).
"Biodegradable" or "eco-friendly"	Washington State's stormwater manual says not to assume "biodegradable" or "non-toxic" dyes are safe to wash into drains (WA Department of Ecology, BMP S436). Starch breaking down says nothing about the synthetic dyes.

None of this means a given powder is dangerous. It means the label is marketing, and the Safety Data Sheet and your own precautions are what you can rely on.

The Safety Data Sheet

A Safety Data Sheet (SDS) is the document a manufacturer prepares under OSHA's Hazard Communication Standard. A complete SDS has 16 sections in a fixed order (OSHA Brief 3514). Ask every supplier for one before you order, and keep a printed copy at the first aid table.

Read SDSs closely, because they vary. One school-hosted SDS we reviewed classified its powder as non-hazardous yet listed flammability and explosion limits as "not available," made no combustible-dust statement, said it may cause respiratory irritation, and called the starch wheat in one section and cornstarch in another (supplier SDS, 2025). In our own price check, one seller's "Safety Data Sheet" link led to a short consumer guide of about eight sections, not a 16-section SDS.

Ten questions to ask a supplier, in writing:

1. Can you send the full 16-section SDS for each color we are ordering?
2. What is the base: cornstarch, wheat starch, rice flour or talc?
3. Which dyes are in each color? (Families who avoid Yellow 5, also called tartrazine, will ask.)
4. Is the powder gluten-free?
5. Has it been tested for flammability or dust explosibility, and can we see the result? The Massachusetts State Fire Marshal recommends asking for explosibility data (Massachusetts Department of Fire Services, 2016).
6. Does it contain a non-combustible additive such as sodium bicarbonate, and how much?
7. Has it been tested for heavy metals?
8. What first aid does the SDS give for eyes and inhalation?
9. How should we store it, and for how long?
10. What do you recommend for cleanup and disposal?

If a supplier can't send a full SDS, choose another supplier.

Breathing and asthma

Color powder is fine dust, and much of it is small enough to breathe in. In one peer-reviewed lab study of four festival powders, 43% to 80% of particles were in the inhalable size range, and three of the four triggered more inflammatory signals in human blood cells than plain cornstarch (Bossmann et al., 2016). Germany's environment agency measured fine dust at one festival in 2015. Over the measurement, levels averaged about six times the EU's 24-hour limit, with brief peaks far higher. That compares a short measurement with a daily limit, so it is only a rough indication, and the powder appeared to be talc-based, not starch (Umweltbundesamt, 2015).

Evidence gap We found no study that measured dust at an actual color run. The research comes from multi-hour festivals, often with different powders. A short school event with a few stations is likely a much smaller exposure, though no one has measured it. But people exercising breathe harder and take in more of whatever is in the air, and children with asthma are among those most affected by airborne particles (CDC).

The most cautious official position we found is Switzerland's: its health office advises that people with asthma not take part in powder festivals, and it names children, people with allergies and people with heart or lung disease among the most sensitive groups who should also stay away. That advice was written for dense, hours-long festivals. Most school color runs take a middle path:

• Tell families with asthma to talk to their doctor and follow the child's asthma action plan, including taking a preventer beforehand if prescribed and carrying a reliever.
• Offer the powder-free route without anyone having to explain why.
• Keep powder below the shoulders, never thrown at faces, and avoid dense clouds.
• Let anyone skip the finale toss, which is the densest cloud of the day.
• Be honest about masks. Masks are recommended by several agencies as a way to reduce exposure, but news reports say many particles are small enough to pass through a bandana (NewsChannel 5, 2015) and that surgical masks won't fully stop fine particles (KCRG-TV9, 2016). Don't promise that any mask makes powder safe.

Eyes

Eye irritation is a common reason people need first aid at powder events. At German Holi festivals, first aid teams reported that about 80% of their treatments were eye rinses (Umweltbundesamt, 2016). More serious injuries, including corneal damage, have been reported after Holi festival powders in India, some of which contained contaminants such as malachite green and lead oxide; the researchers said cause and effect was not established (Reuters Health, 2017).

• Ask everyone to wear sunglasses or other eye protection. Keep a box of spares at check-in.
• Glasses, not contact lenses, on event day. The National Capital Poison Center advises against contacts at powder events (webPOISONCONTROL).
• Powder in the eye: don't rub. Flush with clean, comfortable water for at least 15 minutes, which is the poison center's guidance (the NHS says at least 20). Get medical care for severe or lasting pain, changes in vision or sensitivity to light (webPOISONCONTROL; see also Mayo Clinic and NHS).
• Have enough eyewash. Munich's fire department requires event organizers to provide enough eye-wash stations because eye irritation is expected (City of Munich). Plan at least one eyewash point at first aid and bottles of clean water at each station.

Skin and allergies

Powder stains skin for a while after the event. Prolonged contact can cause redness and itching, mainly in people with sensitive skin, and pigments and fragrances can trigger allergies, according to Switzerland's health office. Three ingredients come up most:

• Dyes. Tartrazine (FD&C Yellow No. 5) has been linked to hives and asthma in sensitive people (American Family Physician, 1990). Get the dye list for every color.
• Wheat. Wheat-based powders contain gluten. A family managing celiac disease or a wheat allergy needs to know.
• Corn. Corn allergy is much less common than many food allergies but can cause serious reactions (WebMD).

Put the base and dye list in the family notice, invite families to speak to the nurse, and make the powder-free route easy to choose. Long sleeves and washing powder off soon afterward both help, as the poison center advises.

Fire: powder is a combustible dust

This is the risk most color run guides leave out. OSHA lists starch and cornstarch among combustible dusts that can fuel a flash fire or explosion when dispersed in a cloud (OSHA Fact Sheet 3878; OSHA combustible dust poster). A dust explosion needs five things at once: fuel, oxygen, an ignition source, a dense enough cloud, and confinement (OSHA hazard alert). Outdoors there's usually no confinement, so the danger is a flash fire rather than an explosion. A flash fire is still deadly.

On June 27, 2015, colored powder sprayed over a crowd of about 1,000 at a party at a water park in New Taipei, Taiwan, ignited. About 500 people were injured and 15 died (Al Jazeera; Focus Taiwan). Taiwan's health ministry reported that the injured had burns over about 41% of their bodies on average (Ministry of Health and Welfare). Up to three tonnes of cornstarch powder had been prepared, staff blew it at the crowd with carbon dioxide canisters, witnesses said smoking was allowed, and stage lighting or cigarettes were among the suspected ignition sources (Taipei Times). That was a nighttime party, not a school run. The same conditions, though, can be created at any event with enough powder, a cloud and a spark.

The best US official guidance is the Massachusetts State Fire Marshal's 2016 memo to fire chiefs. Its recommendations, in plain terms:

• Never use powder in enclosed spaces such as tents, empty pools and small enclosed stadiums.
• Keep powder zones free of smoking, stage lighting, and electrical or gas-powered equipment.
• No cannons or powered devices that project powder over crowds.
• Review the SDS, including explosibility data.
• Prefer powders with a non-combustible additive such as sodium bicarbonate.

Other fire officials have gone further. The Largo, Florida fire department required powder used at color runs to contain 15% baking soda, along with no smoking and no electrical devices to distribute powder, according to a local news investigation (ABC Action News, 2016). A Tennessee fire official warned that gas-powered leaf blowers seen at some races could provide a spark (NewsChannel 5, 2015). Bowling Green State University's protocol for campus color runs calls for powder thrown by hand only, a water or dry chemical extinguisher on site, and no CO2 extinguisher for outdoor dust fires (BGSU Risk Management).

Children and age

Children are shorter, so a cloud at an adult's chest height is at a child's face, and young children are less likely to close their eyes and mouth on cue. Schools can adjust the format for younger students rather than leave them out:

Age	Possible adjustments
Preschool and K–2	Lighter dusting, color at the last station only or at the finish, an adult beside every station, eye protection, no finale toss
Grades 3–5	The full course with standard stations; remind students to close eyes and mouth as they pass
Middle and high school	Full format; older students can volunteer at stations under adult leads, never aiming at faces

Some schools keep color for one grade, such as a fifth-grade finish, which keeps the youngest students out of the cloud entirely. The school color run guide covers grade-by-grade plans, and the inclusive and powder-free options page covers alternatives for students who can't or shouldn't be near powder.

Volunteers who handle powder

Applicators and refill runners are exposed for much longer than any participant. Give them:

• Eye protection and a dust mask, and tell them plainly that the mask reduces exposure but isn't a guarantee.
• A refill method that keeps dust low: open bags close to the bin, pour slowly, close bags right away. Refill behind the station, away from the lane.
• Shifts, so nobody stands in powder for the whole event.
• The station rules on a card, and a lead who can call a pause.

Volunteers with asthma or allergies should take a role away from the powder. The color run volunteer guide includes a ten-minute safety briefing script.

Wind, heat and water

Wind. Evidence gap We found no official wind limit for color powder. The practical rule is simple: put stations where the wind carries powder away from buildings, parked cars, spectators and the first aid table, and pause when it doesn't. If gusts are pushing powder into faces or across the course, stop applying until they ease. Decide in advance who makes that call.

Heat. Many color runs happen in late spring and early fall. Know the signs: heat exhaustion brings heavy sweating, cold, pale and clammy skin, dizziness or nausea. Heat stroke, with high body temperature, hot skin and confusion, is an emergency: call 911 and cool the person (National Weather Service). The American Academy of Pediatrics advises regular water breaks because young children may not remember to drink, shade breaks, light clothing, and a heat policy set in advance (HealthyChildren.org).

Water. Plan water at the start, the finish and the middle of any course longer than a mile. Keep clean water for drinking separate from water for rinsing eyes and hands.

First aid and emergency plan

• A first aid table upwind of the stations, staffed by an adult with first aid training and, for a school, the nurse if possible.
• Eyewash bottles or an eyewash station, clean water, cups, wipes, towels and gloves.
• The SDS for every color, printed.
• Students' medications: inhalers and epinephrine auto-injectors with the people who need them, as the nurse directs.
• An AED. The American College of Sports Medicine says AEDs should be at all sporting events, including fundraisers and road races, near the start and finish (ACSM). Know where the school's AED is and who can use it.
• An emergency plan: who calls 911, where an ambulance would enter, and who meets it.
• Poison help: in the United States, 1-800-222-1222.

Venue rules and permits

Ask before you plan, and get the answer in writing. Schools usually need the principal, facilities and sometimes the district. Parks and cities often have their own conditions. A Wisconsin county requires a permit with storm drain barriers, the SDS for all colors and cleaning products, and the right to clean up and bill the organizer (Winnebago County Parks). The University of Missouri restricts outdoor powder events on its main campus because its stormwater flows to a stream on EPA's impaired list (University of Missouri). Many artificial turf fields ban marking or staining substances, so ask before planning powder on turf.

Questions to ask the venue: Is powder allowed, and on which surfaces? What cleanup standard do you expect, by when? Is a deposit or permit needed? Does the venue's insurance, or yours, cover a powder event? Is there a required waiver or permission form?

To present your plan, fill in the color run safety planning checklist (also as a PDF) and give it to the principal or venue operator with the SDS for each color. It covers approvals, powder, fire, first aid, inclusion, stations, weather and cleanup, and ends with a sign-off table. It does not approve anything: the people and agencies who sign it decide whether your arrangements are acceptable.

Environment and cleanup

Under federal stormwater rules, a discharge to a storm sewer that isn't entirely stormwater is generally an illicit discharge, with limited exceptions. Storm sewers aren't designed to treat those wastes, so the pollutants reach streams and lakes (EPA). Washington State's manual for color events requires protecting storm drains, keeping color at least 100 feet from streams, sweeping dry, no blowers, no hoses or pressure washers on paving unless all the water is collected for the sanitary sewer with approval, and finishing cleanup before the next forecast rain and within 24 hours. Local rules differ, so ask yours. The color run cleanup guide explains how to do it on every surface.

The station rules

These seven rules go on every station card, in the volunteer briefing and in the family notice:

1. Aim color below the shoulders. Never at faces.
2. Stop for anyone who says stop, covers their face or turns away.
3. Nobody on the powder-free route gets color.
4. Pause when wind carries powder toward people, buildings or cars.
5. No flames, smoking, grills, sparklers, fireworks or gas-powered equipment near powder. Keep bags sealed, dry and away from heat until needed.
6. Powder in someone's eyes: walk them to first aid to flush with clean water.
7. After the last wave: sweep dry powder onto tarps and bag it. Nothing into drains.

• Safety planning checklistEditable plan for a principal or venue operator to review, with a sign-off table. A planning aid, not an approval.Download DOCX · PDF
• Volunteer cardsStation lead, applicator, refill runner, powder-free route guide, first aid, cleanup.Download PDF
• Family noticeWhat to expect, what to wear, and a private powder-free request slip.Download PDF

Families will ask many of these questions in shorter form. The color run questions page has brief answers you can adapt for your parent FAQ.

For a walking event without powder, our walk-a-thon safety checklist covers the shared basics, and the main walk-a-thon guide covers the rest of the planning.

Sources

1. Swiss Federal Office of Public Health, Holi powder fact sheet for consumers. bag.admin.ch (accessed October 20, 2026)
2. Hosted by Coolum State School, FAQs for Colour Powder Event (supplier-written). coolumss.eq.edu.au (accessed October 20, 2026)
3. U.S. Food and Drug Administration, Color additives. fda.gov (accessed October 20, 2026)
4. KCRG-TV9, Color Run powder could lead to health concerns. kcrg.com (accessed October 20, 2026)
5. KWCH, Color run concerns up in flames. kwch.com (accessed October 20, 2026)
6. Journal of Loss Prevention in the Process Industries (Castells Somoza et al., 2023), Coloured powder potential dust explosions. oa.upm.es (accessed October 20, 2026)
7. Washington State Department of Ecology (hosted by Kitsap County), BMP S436: BMPs for Color Events, 2024 Stormwater Management Manual for Western Washington (Pub. 24-10-013). kitsap.gov (accessed October 20, 2026)
8. U.S. OSHA, Hazard Communication Standard: Safety Data Sheets (Brief 3514). ehs.unm.edu (accessed October 20, 2026)
9. Hosted by Coolum State School, Safety Data Sheet, coloured powder (supplier SDS, Feb 2025). coolumss.eq.edu.au (accessed October 20, 2026)
10. Massachusetts Department of Fire Services, State Fire Marshal, Colored powder memo to fire chiefs. mass.gov (accessed October 20, 2026)
11. Journal of Occupational Medicine and Toxicology (Bossmann et al., 2016), Holi colours contain PM10 and can induce pro-inflammatory responses. occup-med.biomedcentral.com (accessed October 20, 2026)
12. Umweltbundesamt, Fine dust at a Holi festival (telegram). umweltbundesamt.de (accessed October 20, 2026)
13. Centers for Disease Control and Prevention, Asthma and air pollution. cdc.gov (accessed October 20, 2026)
14. National Capital Poison Center (webPOISONCONTROL), Are Holi colors safe?. poison.org (accessed October 20, 2026)
15. Mayo Clinic, First aid: eye injuries. mayoclinic.org (accessed October 20, 2026)
16. NHS, Eye injuries. nhs.uk (accessed October 20, 2026)
17. City of Munich, Holi festivals: fire department requirements. lhm.muenchen.swm.de (accessed October 20, 2026)
18. American Family Physician (1990), Tartrazine sensitivity. pubmed.ncbi.nlm.nih.gov (accessed October 20, 2026)
19. WebMD, Corn allergies facts. webmd.com (accessed October 20, 2026)
20. U.S. OSHA, Combustible dust fact sheet (FS-3878). osha.gov (accessed October 20, 2026)
21. U.S. OSHA (hosted by eLCOSH), Hazard alert: combustible dust explosions. elcosh.org (accessed October 20, 2026)
22. Focus Taiwan (CNA), Supreme Court upholds sentence in water park dust explosion case. focustaiwan.tw (accessed October 20, 2026)
23. Ministry of Health and Welfare, Taiwan, Formosa Fun Coast dust explosion: burn patient statistics. mohw.gov.tw (accessed October 20, 2026)
24. Taipei Times, Water park fire: investigation details. news.ltn.com.tw (accessed October 20, 2026)
25. ABC Action News (WFTS), Largo Fire Department puts restrictions on color runs. tampabay28.com (accessed October 20, 2026)
26. WTVF NewsChannel 5, Tennessee fire official warns about dangers of color runs. newschannel5.com (accessed October 20, 2026)
27. Bowling Green State University, Office of Risk Management, Color Run Safety and Protocol. WWW.BGSU.EDU (accessed October 20, 2026)
28. National Weather Service, Heat illness. weather.gov (accessed October 20, 2026)
29. American Academy of Pediatrics (HealthyChildren.org), Exercise-related heat illness. healthychildren.org (accessed October 20, 2026)
30. American College of Sports Medicine, Increasing the availability of AEDs at sporting events. khsaa.org (accessed October 20, 2026)
31. Winnebago County Parks Department, Run, walk, roll permit requirements. co.winnebago.wi.us (accessed October 20, 2026)
32. University of Missouri Environmental Health and Safety, Special events. ehs.missouri.edu (accessed October 20, 2026)
33. U.S. EPA, Illicit discharge detection and elimination (Phase II fact sheet 2.5). epa.gov (accessed October 20, 2026)
34. U.S. Food and Drug Administration, Summary of color additives for use in the United States in foods, drugs, cosmetics and medical devices. fda.gov (accessed October 20, 2026)
35. Umweltbundesamt (hosted by the German Federal Institute for Risk Assessment), Feinstaubbelastung auf Holi-Festivals: Analysen vor Ort und im Labor (presentation, Apr 8, 2016). BFR.bund.de (accessed October 20, 2026)
36. WTVF NewsChannel 5, Experts: colorful color run powders may carry hidden risks (Nov 2015). newschannel5.com (accessed October 20, 2026)
37. Free Malaysia Today, Hindu tradition of throwing Holi colors may carry health risks (Reuters Health, Nov 5, 2017). fmtv5.freemalaysiatoday.com (accessed October 20, 2026)
38. U.S. OSHA, Combustible dust poster. osha.gov (accessed October 20, 2026)
39. Al Jazeera, Taiwan water park fire injures hundreds (Jun 28, 2015). aljazeera.com (accessed October 20, 2026)