iS Clinical Active Serum™

Yes, iS Clinical Active Serum is widely considered one of the best serums for those dealing with both acne and early signs of ageing. It combines botanical AHAs and BHA to exfoliate, unclog pores, and reduce the appearance of fine lines simultaneously, making it an excellent multi-tasking treatment for combination or problem skin.

The cool, tingling sensation you feel upon application is completely normal and indicates the active botanical ingredients are working on your skin's surface. The sensation typically subsides within a few minutes. If you find it too intense, try mixing a few drops with iS Clinical Hydra-Cool Serum to reduce the effect whilst still gaining the benefits.

Many users notice a refreshed, more radiant complexion within just a few days of use. For more significant improvements in fine lines, uneven skin tone, and blemishes, consistent use over 4-8 weeks typically delivers the best results. The serum provides both immediate and long-term benefits.

Yes, but with caution. As Active Serum contains exfoliating acids, using it alongside retinol may increase sensitivity. We recommend using them on alternate evenings rather than together, or using Active Serum in the morning and retinol at night. Always listen to your skin and reduce frequency if you experience irritation.

Active Serum is formulated to be suitable for all skin types, including sensitive skin. The botanical-derived acids are gentler than synthetic alternatives. However, if you have very sensitive or reactive skin, we recommend starting with application every other day and gradually increasing frequency as your skin builds tolerance.

Absolutely yes. Active Serum contains AHAs and BHA which can increase your skin's sensitivity to the sun. Always apply a broad-spectrum SPF 30 or higher during the day when using this serum to protect your skin from UV damage and prevent hyperpigmentation.

The formula is identical – the only difference is the size. The 15ml is perfect for trialling the product or for travel, whilst the 30ml offers better value for regular use. With only 3-4 drops needed per application, the 30ml bottle typically lasts 2-3 months with twice-daily use.

Yes, Active Serum can be applied to the neck and décolletage to treat sun damage, uneven texture, and signs of ageing in these areas. The skin on your neck and chest is thinner than facial skin, so start with application every other day and ensure you apply SPF to these areas during the day.

This serum contains white willow bark extract (a botanical source of salicylic acid) and natural AHAs from bilberry and sugarcane. Whilst iS Clinical states that their products are non-systemic and considered safe during pregnancy and nursing, the use of topical acids during pregnancy remains a topic where medical opinions vary. We recommend consulting your GP, midwife, or dermatologist before use during pregnancy or whilst breastfeeding to make an informed decision based on your individual circumstances.