Question 1

What is Sodium PCA and what does it do in sunscreen?

Accepted Answer

Sodium PCA is a humectant, a water-binding ingredient that draws and holds moisture in the upper layers of the skin. It is a component of the skin's own natural moisturizing factor, so it works in harmony with how skin keeps itself hydrated. In a sunscreen it helps the formula feel hydrating and keeps skin supple rather than tight or dry.

Question 2

Is Sodium PCA safe?

Accepted Answer

Yes. Sodium PCA is the salt of an amino acid derivative that the skin already produces, and it is widely used in moisturizers and sunscreens with a long record of good tolerance. At the levels used in cosmetics it is non-irritating for most people. It is considered a gentle, skin-friendly humectant.

Question 3

Does Sodium PCA clog pores?

Accepted Answer

No. It is a water-soluble humectant, not an oil or wax, so it does not block pores. It actually helps hold water in the skin rather than leaving any greasy residue. It is a safe choice for oily and acne-prone skin.

Question 4

Is Sodium PCA good for dry skin?

Accepted Answer

Yes, it is well suited to dry skin. Because it binds water into the upper layers and mirrors part of the skin's natural moisturizing factor, it helps keep skin hydrated and supple. It pairs well with other humectants and with richer emollients that seal that moisture in.

Question 5

What else is Sodium PCA called?

Accepted Answer

Sodium PCA is the INCI name on the label. PCA stands for pyrrolidone carboxylic acid, so you may see it described as the sodium salt of PCA or as sodium pyroglutamate. On an ingredient list it usually sits among the other humectants and hydrating ingredients.

Sodium PCA

What Sodium PCA is & what it does

What is Sodium PCA and what does it do in sunscreen?

Is Sodium PCA safe?

Does Sodium PCA clog pores?

Is Sodium PCA good for dry skin?

What else is Sodium PCA called?

Sunscreens with Sodium PCA