AlumierMD AHA Renewal Serum

AlumierMD AHA Renewal Serum is a leave-on lactic acid exfoliant built on 8% lactic acid, buffered with sodium hyaluronate, panthenol and allantoin so hydration isn't stripped while it works. It's an evening product for dull, rough or uneven-textured skin on any skin type, used two to three times a week and built up gradually rather than nightly from the start.

What it actually is

AHA Renewal Serum is a 30ml water-light serum built around 8% lactic acid, which sits second in the ingredient list — a genuine resurfacing treatment rather than a token amount of acid added for the label. Lactic acid is the largest molecule of the common AHAs, so it tends to work nearer the skin's surface and generally suits skin that finds glycolic acid too aggressive. AlumierMD pairs the acid with sodium hyaluronate, panthenol and allantoin so the skin holds onto water while the exfoliation is happening, rather than being left stripped and tight the way some leave-on acids can feel. The formula is fragrance-free, with arnica and green tea included to help keep it calm.

Key ingredients

• Lactic Acid (8%) — an AHA that helps improve the appearance of dull, uneven or rough-textured skin by encouraging dead surface cells to shed. See our Lactic Acid glossary entry for how it compares with other AHAs.
• Sodium Hyaluronate — a humectant that helps the skin hold onto water while the acid is exfoliating, offsetting the dryness leave-on acids can otherwise cause. Read more in our Sodium Hyaluronate glossary entry.
• Panthenol — a soothing, moisture-binding ingredient included alongside the hyaluronate to help the formula stay comfortable during use. See our Panthenol glossary entry.
• Allantoin — another calming ingredient in the buffering blend, commonly paired with active acids to help support comfort.
• Arnica and green tea extract — included to help keep the formula calm on application, alongside the fragrance-free base.

What it feels like to use

It's a thin, water-light serum that absorbs in seconds and leaves nothing behind. Most people notice a brief tingle for the first minute or so — expected with an 8% acid concentration, and it should fade rather than build. If it stings sharply, or your skin flushes and stays red rather than settling, drop back to once a week and rebuild gradually rather than pushing through. Follow with a moisturiser afterwards.

Who it's for

AHA Renewal Serum suits dull, rough or uneven-textured skin on any skin type, including people who've tried glycolic acid and found it too aggressive. It's also a sensible pick for visible congestion or a build-up of dead surface cells, and for anyone wanting the rest of their routine — serums, make-up — to sit better once that surface build-up has gone. It's less suited to actively irritated, broken or sunburnt skin, and to anyone already using a nightly retinoid without a settled tolerance for that on its own first. AlumierMD also flags it as unsuitable for anyone with a known allergy to arnica or other Asteraceae-family plants, given the arnica in the formula.

How to use it

This is an evening-only product. AlumierMD's guidance is to build up to twice- or thrice-weekly use over four to six weeks rather than starting at that frequency from day one — begin less often and increase as your skin shows it's tolerating the acid well. Apply to clean, dry skin and follow with a moisturiser. Don't layer it with a retinoid on the same night until you know how your skin handles each product individually. If you're unsure how to sequence this alongside other actives in your routine, our Academy team can advise.

AHA Renewal Serum vs Bright & Clear Solution vs MicroDerm Polish

AlumierMD's exfoliation range has three distinct options, worth being clear on before picking one. AHA Renewal Serum is a concentrated, leave-on lactic acid serum for resurfacing rather than everyday toning. Our Bright & Clear Solution review covers AlumierMD's cotton-pad-applied exfoliating toner, which has a broader skin-type fit and suits more frequent use rather than a targeted resurfacing step — see our AHA Renewal Serum vs Bright & Clear Solution comparison for the full breakdown. The closest alternative within the resurfacing category itself is MicroDerm Polish, which exfoliates mechanically with a rinse-off scrub rather than chemically. If your skin doesn't tolerate physical scrubs well but you still want a smoothing effect, this serum's leave-on, chemical approach reaches more evenly and keeps working after application, rather than only where you've physically rubbed.

For the full AlumierMD exfoliation and resurfacing range, visit the AlumierMD brand hub.

Our verdict

AHA Renewal Serum is a genuine resurfacing treatment — 8% lactic acid is a meaningful concentration, not a headline ingredient added in a token amount — with sensible thought put into keeping the skin hydrated while it works via sodium hyaluronate, panthenol and allantoin. It's a good option for dull, rough or uneven-textured skin, particularly for anyone who's found glycolic acid too sharp, but it rewards a gradual build-up rather than diving straight into thrice-weekly use, and it shouldn't be combined with a retinoid on the same night until you've established how your skin handles each on its own.