Murad Biome-Balancing Clear And Prevent Blemish Treatment SerumApplication: apply 1-2 pumps of Biome-Balancing Clear & Prevent Blemish Treatment Serum to face and neck by day, let dry completely before applying moisturiser. Alternate by spot-treating with Deep Relief Blemish Treatment at night.Skin type: suitable for all skin types Benefits: this breakthrough serum merges trusted blemish-clearing ingredients like salicylic acid with the ultimate biome-balancing technology to provide a healthier, more balanced microbiome that's naturally more resistant to recurring blemishes30mlFor hygiene reasons, we are unable to exchange or refund this product, unless faulty.