How do I use Active Serum?

Apply a few drops to clean, dry skin at night, then follow with moisturizer. Start two or three nights a week and build up as your skin tolerates it.

Is it safe for sensitive skin?

It contains glycolic and salicylic acids, so sensitive skin may sting or flush. Patch test first and avoid pairing it with retinoids or other acids on the same night.

Can I use it during the day?

It is designed for nightly use. If you apply it in the morning, follow with a broad-spectrum sunscreen, since acids increase sun sensitivity.

How does it compare with other iS Clinical serums?

Active Serum is the exfoliating, acne-focused option. Pro-Heal Serum is the gentler antioxidant choice for redness and reactive skin, and Hydra-Cool is the hydrating pick.

How long until I see results?

Most users notice smoother texture within a few weeks. Fading of marks and softening of fine lines usually takes a couple of months of consistent use.

What is in the bottle?

A 30 mL pipette bottle of serum. The formula includes glycolic acid, salicylic acid, white willow bark, bilberry, sugarcane, mushroom extract, arbutin and glycerin, and is paraben-free.