What is Sodium PCA?
Sodium PCA falls into the humectant category — a humectant that draws water into the skin. A natural-moisturising-factor humectant rated 0/5.
Where Sodium PCA shows up
As a humectant that draws water into the skin, Sodium PCA typically appears in serums, toners, and moisturisers of every kind. Separately from clogging, its irritancy is rated 0/5 — low, so it's unlikely to sting or sensitise on its own.
Is Sodium PCA bad for acne-prone skin?
That low score makes Sodium PCA a reasonable choice even for acne-prone skin. As always, individual reactions vary, but it is not a likely cause of clogged pores.