Ingredient dictionary

PPG-15 Stearyl Ether

A synthetic ether built from stearyl alcohol, a fatty alcohol, plus a chain of propylene glycol units. It softens skin and helps oil and water-based ingredients blend. It is on the label of 12 products in our library. Checked against our library November 6, 2026.

What PPG-15 Stearyl Ether does

Softens and smooths the skin
Helps oil and water-based ingredients blend
Adds a smooth feel to deodorant formulas

PPG-15 Stearyl Ether is made by attaching propylene oxide to stearyl alcohol, a long-chain fatty alcohol with 18 carbon atoms. The PPG-15 part means about 15 repeating propylene glycol units sit on that fatty chain.

Formulators use it mainly as an emollient, meaning it softens and smooths the skin's surface. It can also help oil and water-based ingredients stay blended, which makes it handy in deodorant bases. It tends to leave a smooth rather than oily or tacky feel.

Good for

Anyone who wants a deodorant that feels smooth and light on the skin.

Frequently asked questions

Is PPG-15 Stearyl Ether safe for sensitive skin?

It is generally well tolerated in cosmetic products. Still, anyone with sensitive skin should patch test a new deodorant first, since any ingredient can irritate some people. Stop using it if redness, stinging or itching appears.

Does PPG-15 Stearyl Ether help stop sweat?

No. PPG-15 Stearyl Ether is a base ingredient, not an active. Products that reduce sweat list an antiperspirant active, such as an aluminum salt, on the label. This one mainly helps with feel and texture.