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Glow & Gild

Worth It?

Is Sunday Riley Good Genes Worth It?

Good Genes is famous for overnight glow. The ingredient behind that glow is one of the cheapest acids in skincare.

By Sawyer V. · Published September 10, 2026 · Last updated September 10, 2026

Prickly pear cactus with ripening fruit

The short answer

For most people, no. Good Genes is a lactic acid treatment in a creamy base with a long list of botanical extracts. Lactic acid is a gentle, effective exfoliant — and it is widely available at a small fraction of the price, often with a published percentage, which Good Genes does not provide.

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How We Picked

We read the published ingredient list, identified the active doing the exfoliating work, and compared it with lactic acid products that state their strength. We have not tested any of these.

Everyone in this category says they tested twenty of these. We have not tested any, and we say so. What we did instead: compiled the published concentrations and ingredient lists, checked each claim against what the formula can actually support, and wrote down who each product is wrong for. The full method is published so you can check it.

What Is in the Bottle

The exfoliating active is lactic acid, an alpha hydroxy acid. In the published ingredient list it appears after water, a series of botanical extracts — prickly pear, arnica, aloe, agave and others — a yeast extract, a ferment filtrate and emollients such as squalane. We could not find a published lactic acid percentage.

ComponentWhat it does
Lactic acidExfoliates the surface for smoother, brighter-looking skin; also mildly hydrating
Botanical extractsMarketed as soothing and conditioning; each adds a variable for reactive skin
Squalane, caprylic/capric triglycerideEmollients that make it feel creamy rather than stinging

Lactic acid is a larger molecule than glycolic acid, so it penetrates more slowly and is generally gentler. That is a real advantage for sensitive and dry skin, and it is why the overnight glow people describe is plausible — it is simply what a well-formulated lactic acid does. The wider acid family is covered in best chemical exfoliants.

Where the Price Goes

  • What you pay for: a pleasant, creamy texture that makes an acid feel gentle, a recognizable brand and a botanical-rich formula.
  • What undercuts it: lactic acid itself is inexpensive and widely available, often with a stated percentage that lets you dose it deliberately.
  • The sensitive-skin catch: a long botanical list is more to react to. Reactive skin is often better off with a shorter formula.
No product photoNo product photograph available for Sunday Riley Good Genes Lactic Acid Treatment

Premium Beauty listing

1The treatment being assessed

Sunday Riley Good Genes Lactic Acid Treatment

What’s in it

  • Lactic acid as the exfoliating active
  • Creamy base with botanical extracts and squalane
  • No published lactic acid percentage that we could find

For anyone who loves the texture and experience and can afford it, it is a gentle, effective lactic acid treatment.

Who it’s not for

Anyone on a budget, anyone who wants to know their dose, and reactive skin wary of long botanical lists.

No product photoNo product photograph available for The Ordinary Lactic Acid 10% + HA

2A published 10% at a fraction of the price

The Ordinary Lactic Acid 10% + HA

What’s in it

  • 10% lactic acid, stated in the product name
  • Paired with hyaluronic acid
  • Low price

It delivers the same active at a published strength, which makes it easy to dose and to compare.

Who it’s not for

First-time acid users and sensitive skin, who should start at the 5% version.

No product photoNo product photograph available for The Ordinary Lactic Acid 5% + HA

3A gentle published starting strength

The Ordinary Lactic Acid 5% + HA

What’s in it

  • 5% lactic acid, stated in the product name
  • Paired with hyaluronic acid
  • Low price

A lower published strength is the sensible way to start with lactic acid, especially on sensitive skin.

Who it’s not for

Anyone already comfortable with a stronger acid, who will find it too mild.

No product photoNo product photograph available for The INKEY List PHA Toner

4An even gentler acid for reactive skin

The INKEY List PHA Toner

What’s in it

  • Polyhydroxy acid, a gentler relative of AHAs
  • Toner format
  • Low price

For skin that stings even with lactic acid, a polyhydroxy acid exfoliates more gently still.

Who it’s not for

Anyone wanting a visible overnight result; PHAs are subtle by design.

Skip This One

Using Good Genes every night alongside a retinoid

Good Genes feels gentle because of its creamy base, which makes it tempting to use nightly with everything else. But it is still an exfoliating acid, and pairing it every night with a retinoid stacks two turnover-boosting actives on the same skin — a common route to redness and flaking that gets blamed on whichever product was added last. Alternate nights, or use the acid a few times a week, and keep daily sunscreen non-negotiable.

Frequently Asked Questions

Lactic acid, an alpha hydroxy acid, in a creamy base with botanical extracts.

Sources

Who wrote this

By Sawyer V.. An enthusiast who’s genuinely into this: I read the manufacturer documentation, compile the published percentages, and do the arithmetic. No lab coat.

What I don’t do: test products, accept free product, or accept payment for placement. I hold no clinical credential and don’t claim one. How we pick.

Published September 10, 2026 · Last updated September 10, 2026

A glass bottle of exfoliating liquid on dark stone

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Nothing here is medical advice. Editorial policy · How we pick · Affiliate disclosure