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Corn Starch
Corn Starch (Zea Mays) is a versatile ingredient capable of acting as a bulking agent, moisture absorber and actives carrier suitable for a variety of personal care applications—naturally.
Description
Corn Starch - Zea Mays
About
Zea Mays, commonly known as Corn Starch, is a fine, white powder often used as binder/filler for bath fizzing powder or bath bombs. By binding to the baking soda as well as the citric acid in your bath bombs, the cornstarch slows down the rate at which both of them dissolve. The effect is that the fizzing may last 3 or 4 minutes, instead of only a few seconds.
Corn Starch can replace talc in personal care formulations. It offers improved oil and moisture absorbency when compared to talc in skin lotion formulations (below 3%). Because of its botanical nature, it is safe for topical use in baby powder products. In addition, since starch "rolls" as it moves over the skin, there is a perceivably better skin smoothness with it over talc.
Usage
Follow these simple instructions for best results. Zea mays is compatible with a wide variety of other personal care ingredients.
Depending on the application, the level of starch added can range from 1–99%.
In lotions, 0.5–3% corn starch is incorporated to reduce tack and oiliness, whereas the starch is formulated up to 30% in cream to powder formulations and up to 99% in topical body powders.
Additional Notes
These are only suggested usage rates. Each formulation is different and you must test in small batches to find the percentages that work best for you. Always start by mixing in a low percentage, then gradually add until you reach your desired result.
Use this batch calculator to help you determine exactly how much you need to use of this ingredient for your next batch.
Batch Calculator
Ingredients
- ↕ % 5.00
- ↕ % 3.00
- ↕ % 2.00
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Technical
This carries a GHS Warning signal word for combustible dust — it can form a combustible dust concentration in air. Keep away from heat, sparks, open flames, and other ignition sources, and avoid generating airborne dust.
Product Profile
Physical characteristics and solubility
Powder
Opaque
White
No (insoluble)
4.8 – 5.8
≈ 0.64 g/cc (≈ 40 lbs/ft³)
USA
Ingredients
Common and INCI names for your product label
Zea Mays (Corn) Starch
Corn Starch
This is a single-ingredient raw material (100% starch per the SDS) — no preservative system to declare. The copy button copies the INCI declaration.
Storage & Shelf Life
How to keep this powder stable batch to batch
Airtight container, room temperature
1 Year
Keep It Sealed and Dry
Store in a well-ventilated, dry place with the container tightly closed.
Minimize Dust and Keep Away From Ignition Sources
This powder can form a combustible dust in air. Avoid generating airborne dust, keep away from heat, sparks, and open flames, and ensure equipment is properly grounded when handling in bulk.
Use Clean Tools
When measuring or transferring product, use clean utensils to prevent cross-contamination. Avoid reaching in with bare hands.
Test Before Scaling
Run a small batch first to confirm dispersion and stability in your specific formulation before committing to a full production run.
Quality & Compliance
Regulatory status at a glance
Warning — combustible dust
Hazardous — labeling applies
Not classifiable (ACGIH A4)
Not Listed
FDA GRAS-listed food additive. Not hazardous to health under normal use — the Warning classification relates specifically to dust explosion risk in bulk handling, not to skin, eye, or ingestion exposure.
Disclaimer: The technical specifications above reflect standard production values and may vary slightly between batches. Always conduct your own small-batch testing and stability studies before scaling up to production.
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