Question 1

What is Palmitic Acid and what does it do in sunscreen?

Accepted Answer

Palmitic Acid is a fatty acid used as a thickener and co-emulsifier. In a sunscreen it adds body to the cream, helps build a stable, smooth texture, and conditions the skin surface. It is one of the most common fatty acids in both skin lipids and cosmetic formulas, so it is a familiar, workhorse ingredient rather than an active.

Question 2

Is Palmitic Acid safe?

Accepted Answer

Yes. Palmitic Acid is a naturally occurring fatty acid found in many plant and animal fats and in our own skin, and it has a long, well-established history of safe cosmetic use. At the levels used in sunscreen it is non-irritating for most people. Very sensitive skin can patch test a new product, as with any ingredient.

Question 3

Is Palmitic Acid comedogenic?

Accepted Answer

It rates as low on the comedogenic scale in our data, meaning a small chance of clogging pores for those who are very breakout-prone. In most finished formulas it is used in modest amounts as a thickener, which keeps the real-world risk low. If your skin is acne-prone, it is worth being aware of, but it is not a high-risk pore-clogger.

Question 4

Does Palmitic Acid feed fungal acne (malassezia)?

Accepted Answer

It can, weakly. Palmitic Acid is a fatty acid, and the malassezia yeast behind fungal acne can use some fatty acids as food, though this one sits in the milder, ubiquitous-fatty lane. People who are strictly managing fungal acne (malassezia folliculitis) may choose to avoid it. For everyone else it is harmless, and this is one narrow skin concern, not a general safety issue.

Question 5

What is Palmitic Acid on an ingredient list (INCI)?

Accepted Answer

"Palmitic Acid" is the INCI name printed on the label. It names a saturated fatty acid that takes its name from palm oil, though it is found widely in fats and in skin. On the list it usually appears among the emollients and thickeners rather than near the actives.

Question 6

Is Palmitic Acid vegan?

Accepted Answer

It can be, depending on the source. Palmitic Acid is most often derived from plant oils such as palm, which is vegan, but it can also come from animal fats. If vegan sourcing matters to you, the reliable way to confirm is to check with the specific brand, since the same INCI name can come from different sources.

Palmitic Acid

What Palmitic Acid is & what it does