This is a single serum that combines a 20% ascorbic acid vitamin C treatment with a 10% lactic acid exfoliant, plus resveratrol, hyaluronic acid, vitamin E and ferulic acid. It is formulated at a low pH of 3.3 to 3.5, so it brightens, smooths and defends in one step instead of the usual three separate products. It suits experienced acid users who want a strong antioxidant and exfoliating routine in one bottle. The trade-off is strength: the brand itself warns it may not suit sensitive skin, and the high acid load means many rivals are gentler for beginners.
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Rated 4.4 out of 5 from 784 ratings, the serum is well received overall. Buyers tend to value the combined brightening and exfoliating effect in one step, while some find it too strong for their skin.
All-In Vitamin C + Lactic Loaded Serum combines 6 anti-aging skincare ingredients in one bottle. It brings three products into a single lower-pH acid serum that brightens, smooths and defends the skin.
The formula is made for most skin types but may not be appropriate for sensitive skin. It is formulated at an effective pH of 3.3 to 3.5.
