Active Serum
Renudist price
£££££  £72.00 / 15ml
Renudist rating
Why it's Renude approved

This is iS Clinical's hero product, and you'd be hard pushed to find a less than 5* review on it. Its clinically-proven combination of sugar cane extract (8%), bilberry extract (2%), and willow bark extract (2%) provide natural extracts of glycolic, lactic and salicylic acids, which work together to resurface and decongest pores, clearing breakouts and blackheads and refining overall skin texture. Arbutin and mushroom extract work to reduce pigmentation left by acne.

Active ingredients

sugar cane extract
bilberry extract
willow bark extract

Community Reviews

This nightly serum is a go to for those with acne prone skin, combination/oilier skin types. Ideal to target hyperpigmentation and helps to decongest, soften, smooth and refine overall skin texture.

Recommended for

Skin types: Oily, Combination, Dry, Normal
Skin goals: Wrinkles, Enlarged pores, Fine lines, Blackheads, Uneven texture, Scarring, Pigmentation, Blemishes

How to use

Apply 4-5 drops over a cleansed face, neck and decollete, avoiding the eye and lip area. Allow 2-3 minutes for the formula to work at optimum pH before applying any additional steps in your routine. The formula contains naturally-occurring acids, and if your skin isn't used to acid-based ingredients it will need to adjust, so it's best to introduce this slowly, starting with 1-2x weekly and building up to every other evening (or each evening if your skin can tolerate it), over the course of 4-6 weeks.


iS Clinical's most popular product, this fast-acting, long-term, results-oriented formula decreases the appearance of fine lines and wrinkles, visibly evens skin tone, and is excellent for blemish-prone skin. Touted by physicians as “remarkable” and “phenomenal,” ACTIVE SERUM usually produces results within a couple of days. Potent activity will be noted upon application as evidenced by a cool tingling sensation.


Water, Glycerin, Glyceryl Polyacrylate, Butylene Glycol, SD Alcohol 30, Saccharum Officinarum (Sugar Cane) Extract, Vaccinium Myrtillus (Bilberry) Extract, Triethanollamine, Arbutin, Salix Alba (Willow) Bark Extract, Polyporus Umbellatus (Mushroom) Extract, Menthol, Phenoxyethanol.