Capsaicin

Capsaicin — warming active derived from chili pepper. Used in warming lip balms and anti-cellulite products. May cause burning and redness; avoid contact with eyes and mucous membranes. Use with caution.

Capsaicin is classified as use with caution — it can be a valuable ingredient, but is more likely to cause irritation or sensitivity for some skin types than a plain "safe" ingredient, so patch testing is worth doing first.

Capsaicin has a comedogenic rating of 0 out of 5, meaning it is not known to clog pores and is generally considered safe for acne-prone skin.

Capsaicin is classified as an active in the Pure Moonlight ingredient database. That classification reflects its primary functional role in a skincare formula.