Medik8 Balance Moisturiser with Glycolic Acid Activator Review

Medik8 Balance Moisturiser with Glycolic Acid Activator is a two-part system for oily, combination and blemish-prone skin: a daily prebiotic and probiotic mattifying moisturiser, paired with a separate 10% glycolic acid activator used two to three times a week at night. Together they're designed to control shine, support the skin's microbiome and gently resurface texture.

What's in the box

The system ships as two products in one carton. The Balance Moisturiser is a lightweight gel-cream formulated with prebiotics and probiotics, niacinamide and beta-glucan, applied on its own as a daily moisturiser. The Glycolic Acid Activator is a separate watery serum containing 10% glycolic acid, mixed into the moisturiser (or applied underneath it) two to three evenings a week rather than every day. Keeping the exfoliating step separate from the daily moisturiser means you can control how often your skin is exposed to acid, which suits reactive or blemish-prone complexions that don't tolerate daily AHA well.

Key ingredients

Prebiotics and probiotics are included to help support a healthy balance of bacteria on the skin's surface, an area of skincare Medik8 leans on across this system rather than relying on exfoliation alone. Niacinamide is a mainstay oil-balancing and barrier-supporting ingredient, doing much of the day-to-day work of keeping shine in check. Beta-glucan is included for its soothing, hydrating properties, helping offset any dryness from the glycolic step. The activator's 10% glycolic acid is an alpha-hydroxy acid that works by loosening the bonds between dead skin cells, which can help improve the appearance of texture, congestion and post-blemish marks over time with consistent use.

How to use it

Apply the Balance Moisturiser as your usual moisturising step, morning and evening, after cleansing and any serums. On two or three evenings a week, mix a small amount of the Glycolic Acid Activator into your palm with the moisturiser (or pat it on first) instead of using the moisturiser alone — this is a PM-only step. Because glycolic acid increases photosensitivity, daily SPF is essential the following morning regardless of how often you use the activator. Introduce it gradually (starting at once a week) if you're new to acid exfoliants, and patch test before full use. If you're pregnant or breastfeeding, please contact our team for advice before use.

Who it suits

This system is aimed squarely at oily, combination and blemish-prone skin dealing with excess shine, congestion or an uneven, bumpy texture. It's not intended for dry or predominantly sensitive skin types, who may find the mattifying moisturiser too light on hydration and the glycolic step too stimulating without careful pacing. Anyone using other exfoliating actives (retinoids, other AHA/BHA products) should build the activator in slowly and avoid stacking multiple acids on the same night.

Balance vs Sleep Glycolic

Medik8 also sells Sleep Glycolic, a standalone overnight AHA peel used as its own step in a routine. The Glycolic Acid Activator here is a different product: it's designed specifically to be blended into the Balance Moisturiser rather than layered as an independent peel, and the system as a whole is built around microbiome support and oil control rather than resurfacing alone. If your main concern is texture and dullness across all skin types, Sleep Glycolic is the more targeted exfoliating product; if oiliness and blemish-prone skin are the priority, the Balance system folds exfoliation into a moisturiser built for that skin type. For a broader look at how Medik8's actives compare, our Medik8 brand review and Press & Clear review cover other options for congested, blemish-prone skin.

Verdict

The two-part format is the standout feature here — it lets you dial exfoliation up or down independently of your daily moisturiser, which is a sensible approach for skin that's oily but still reactive to acids. Expect a genuinely mattifying, non-greasy daily moisturiser and a usable, moderate-strength glycolic step, rather than a fast fix; results build with consistent use over several weeks.

FAQs

Can I use the Glycolic Acid Activator every day?

No — it's formulated for two to three uses a week in the evening, not daily use. Using it more often increases the risk of irritation and dryness.

Do I need to buy the moisturiser and activator separately?

No, they're sold together as one two-part system in a single carton.

Is this suitable for dry or sensitive skin?

It's formulated for oily, combination and blemish-prone skin. Dry or sensitive skin types may find the mattifying finish and glycolic step too much without careful pacing — get in touch with our team if you're unsure.

Can I use it with retinol or other actives?

You can, but avoid using the Glycolic Acid Activator on the same night as a retinoid or other exfoliating acid, and introduce new actives one at a time.