Buying notes·Page updated Jun 28, 2026

Sunday Riley Good Genes — Lactic acid serum that resurfaces without the retinol downtime

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Skip if: $122 for one ounce is a lot if you compare it to The Ordinary's lactic acid serum, which is the same active for under $10
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A purified-grade lactic acid treatment that's been a dermfluencer staple since 2010. Lactic acid is a milder AHA than glycolic, so it exfoliates dull and uneven skin without the stinging or peeling most resurfacing actives bring. Layered in with licorice and lemongrass extracts to brighten dark spots and soften texture overnight. Aimed at people who want visible glow and smoother makeup application without committing to a full retinol routine.

Pros

Visible smoothing within a few uses without the irritation of glycolic
Gentle enough to layer with most actives in your existing routine
Fifteen-year track record of reformulations and refinements
Works on combination, sensitive, and dry skin types

Cons

$122 for one ounce is a lot if you compare it to The Ordinary's lactic acid serum, which is the same active for under $10
Fragrance-forward — citrus and lemongrass scent isn't for everyone