Lactic Acid 10% + Hyaluronic Acid.

What the gurus are saying

This serum earns consistent praise for being a genuinely gentle exfoliant that hydrates at the same time it exfoliates, thanks to lactic acid's dual action. Gurus highlight that at 10%, it remains suitable even for sensitive skin, and the added hyaluronic acid means you get plumping and glow without the dryness that stronger exfoliants like glycolic acid can leave behind. At under $10, it's a rare find where affordable pricing doesn't mean skimping on formulation quality, the pH is properly calibrated at 3.8, it absorbs easily, and a plant-derived soother helps calm irritation while the acid works. Most gurus suggest starting with the 5% version if your skin is very reactive, then potentially stepping up to this 10%, or using it a couple of times a week rather than daily depending on your skin's tolerance.