
The Ordinary
Size
0.5 fl oz
Tier
budget
Skin Type
mature
The Ordinary's serum — Retinal 0.2% Emulsion Formulated with Retinol. Targets aging.
The three most popular actives in skincare, decoded. Which one to start with, how to layer all three, and the best affordable serums on Amazon.
Both are dermatologist-backed, fragrance-free, and available everywhere. We compare cleansers, moisturizers, sunscreens, and treatments head-to-head to find the winner for every skin type.