Focused Guide · The three icons read as a system: an exfoliating acid that works on the surface tonight, a gentle retinoid ester that starts a long game, and a high dose retinoid that finishes it, with honest notes on who should skip each.

Good Genes vs A+ vs Luna: The Three Treatment Icons by Job

One acid, two retinoids, three different jobs. The Sunday Riley treatment icons compared on mechanism, skin fit and where each belongs in a routine's life.

No. 1

The Selection

3 listings that answer this brief.

No. 1

Sunday Riley Good Genes All-In-One Lactic Acid Treatment

The Surface Worker

The icon: a purified grade lactic acid treatment that made exfoliation the headline step of the routine

Good Genes works on what is already there: lactic acid loosening the dull surface so skin looks brighter and feels smoother quickly. It is the icon of immediacy, and the only one of the three whose headline result is a next morning event.

Suits

Dull, uneven looking skin where rough surface texture is the main complaint and a treatment step, not another moisturizer, is what the routine is missing

Skip if

Your skin reacts to leave on acids, or your routine already runs a strong exfoliant most nights; one acid step at a time is the sensible rule

Size: 1 fl oz / 30 ml
Format: Pump treatment serum
Key ingredients: Lactic Acid, Licorice Root Extract, Lemongrass, Arnica
Use: Morning or evening, one to two pumps on clean skin
Brand Notes: B Corp Certified, cruelty free, as printed in the brand story

View on AmazonPremium listing verified: Official Sunday Riley brand content on the Amazon listing (From Sunday Riley, with merchant video); manufacturer Sunday Riley and part number 1418581 as printed in the product details.

Sunday Riley Luna Sleeping Night Oil small blue dropper bottle with gold collar

No. 2

Sunday Riley Luna Sleeping Night Oil 0.5 fl oz

The Long Game, Gentle Division

The gentle retinoid on ramp: a trans-retinoic ester carried in a deep blue night oil

Luna's trans-retinoic ester works on the slower retinoid brief, the look of texture and tone over weeks, in an oil that dry and new skin tolerates. It is the icon of beginning properly.

Suits

Retinoid newcomers and dry, comfort seeking skin that wants the mildest entry in the line, with the oil vehicle doing the cushioning

Skip if

You want a stated retinol percentage or the fastest route upward; an ester oil is deliberately a beginning, not a summit

Size: 0.5 fl oz (15ml) dropper bottle
Format: Retinoid night face oil with dropper
Key ingredients: Trans-retinoic acid ester complex, blue tansy, German chamomile
Use: Warm a few drops between palms and press over cleansed face at night, before or after moisturizer
Free of: Parabens, phthalates and gluten, as printed in the listing summary

View on AmazonPremium listing verified: Amazon.com listing with manufacturer Sunday Riley and item model 1881390 printed in the details; listing answers identify the seller as the official Sunday Riley seller on Amazon

Sunday Riley A+ High-Dose Retinoid Serum dark blue pump bottle showing 6.5 percent retinoid blend label

No. 3

Sunday Riley A+ High-Dose Retinoid Serum 1 fl oz

The Long Game, Advanced Division

The summit of the line: a 6.5 percent stabilized retinoid blend for trained skin only

A+ is the same brief at full strength: a 6.5 percent itemized retinoid blend for trained skin that has outgrown gentler formulas. It is the icon of having earned the next rung.

Suits

Experienced retinoid users whose skin has plateaued on gentler formulas and who want the strongest retinoid system the brand sells, used patiently

Skip if

You are new to retinoids, without exception; starting at this strength is how the whole category earns its frightening reputation

Size: 1 fl oz (30ml) pump bottle
Format: Cream serum in an airless style pump
Key ingredients: 6.5% stabilized retinoid blend (retinoid esters, liposomal retinol, blue green algae), encapsulated CoQ10, bisabolol, ginger, honey
Use: Apply at night to cleansed skin, one to two pumps, a few nights a week at first even for experienced users
Positioning: Advanced strength, as printed on the bottle

View on AmazonPremium listing verified: Amazon.com listing with manufacturer Sunday Riley printed in the listing details; the viewed packshot and listing title agree on the 1 fl oz size and the 6.5 percent retinoid blend

No. 2

Questions, Answered

Is Good Genes a retinoid alternative?

No, and the distinction matters. Good Genes is an exfoliating acid treatment: it works on the surface, on texture and the look of brightness. The retinoids work on a slower appearance brief underneath that surface story. They complement each other on alternate nights; neither replaces the other.

Which icon should sensitive skin approach first?

Luna, used a few nights a week, is the gentlest entry of the three, because the ester form and the oil vehicle are both chosen for tolerability. Good Genes is an acid and will tingle; A+ is explicitly an advanced strength product and should be last in any sensitive skin plan, if it appears at all.

Widen the lens in the full Best Sunday Riley Products 2027: The Icons and the Supporting Cast, Ranked ranking, or return to the Sunday Riley hub.

No. ·

Keep Researching

Every page in the Sunday Riley edit.

No. ·

More from the The Houses Desk

The Houses

Biossance

One sugarcane oil, engineered into a whole shelf: the squalane house, read product by product

Read the edit

The Houses

Caudalie

The Bordeaux vine house, read through Viniferine, Resveratrol and grape water

Read the edit

The Houses

Dermalogica

The professional, education led house, read by ritual step

Read the edit

Best biossance Best caudalie Best dermalogica All the houses coverage

Disclosure: links on this page are affiliate links. As an Amazon Associate, Eclat Press earns from qualifying purchases, at no added cost to you. Rankings are never sold. See our affiliate disclosure and methodology.