Sunday Riley Good Genes Lactic Acid Treatment Serum — 1.0 oz, exfoliating brightener for smoother, glowing skin

Good Genes All-in-One Lactic Acid Treatment is a targeted lactic acid serum that exfoliates dead surface skin for immediate radiance and smoother texture.

This concentrated treatment uses purified lactic acid and botanical brighteners to lift away dull, pore-clogging skin cells while helping even tone and soften the feel of expression lines. Designed to work quickly and to be layered into most skincare routines, the formula aims to reveal a fresher-looking complexion without harsh physical abrasives. Sunday Riley combines lab-grade actives with plant-derived supportive ingredients in a cruelty-free, clean formulation.

How quickly will I notice smoother, brighter skin?

Many users report an instant improvement in surface texture and radiance after the first application, thanks to the exfoliating action of high-potency lactic acid. More pronounced changes in dark spots and overall tone typically develop with consistent use over several weeks.

• Immediate: visible smoothing and glow after first use
• Short term: finer lines can appear diminished with continued nightly use
• Long term: gradual reduction in discoloration and uneven tone over weeks

Is this good for sensitive or reactive skin?

Good Genes is formulated to be effective while minimizing irritation by using purified lactic acid and calming botanicals like licorice extract. However, those with highly reactive skin should patch test and introduce it slowly, using lower frequency until tolerance is established.

• Patch test before full-face application
• Start with every-other-night or less to build tolerance
• Pair with soothing moisturizers and sun protection during daytime

How do I incorporate Good Genes into my daily skincare routine?

Apply to clean, dry skin—typically in the evening—before a moisturizer to let the active lactic acid work on the skin surface. Because lactic acid increases sun sensitivity, follow daytime use with broad-spectrum SPF and limit direct sun exposure when possible.

• Step 1: cleanse thoroughly and pat skin dry
• Step 2: dispense a thin layer and smooth across face and neck
• Step 3: follow with hydrating treatment or moisturizer; wear SPF by day

What visible concerns does this serum address?

The treatment targets dullness, uneven texture, and the look of discoloration by chemically exfoliating the outermost layer of skin. Over time, it helps the complexion appear clearer, more even, and softer while supporting a reduction in the look of fine lines.

• Removes dead skin buildup for instant luminosity
• Helps fade stubborn dark spots with regular use
• Visibly smooths and refines skin texture

Who is this for: Good Genes All-in-One Lactic Acid Treatment is suited to people seeking a potent chemical exfoliant that brightens, refines texture, and targets discoloration without physical scrubs. It works for a wide range of skin types and ages, but sensitive or highly reactive skin types should introduce the product gradually and consult a dermatologist if unsure. Sunday Riley’s clean, cruelty-free approach makes this a choice for shoppers who want lab-backed actives blended with supportive botanicals and conscientious brand practices.

Ingredients

INGREDIENTS: Botanical Blend [Water/Eau/Aqua, Opuntia Tuna Fruit Extract, Cypripedium Pubescens Extract, Opuntia Vulgaris Leaf Extract, Agave Tequilana Leaf Extract, Arnica Montana Flower Extract, Aloe Barbadensis Leaf Extract, Saccharomyces Cerevisiae (Yeast) Extract, Leuconostoc/Radish Root Ferment Filtrate], Caprylic/Capric Triglyceride, Squalane, Lactic Acid, PPG-12/SMDI Copolymer, Propanediol, Butylene Glycol, Stearic Acid, Dimethicone, Cetearyl Alcohol, Phenyl Trimethicone, Disiloxane, Ceteareth-20, Glyceryl Stearate, PEG-100 Stearate, Stearyl Glycyrrhetinate, Glycyrrhiza Glabra (Licorice) Root Extract, Cymbopogon Schoenanthus (Lemongrass) Oil, Potassium Hydroxide, Phenoxyethanol, Xanthan Gum, Caprylyl Glycol, Chlorphenesin, Sodium Phytate, Citral, Geraniol, Limonene.