007 Keratin Serum is a lightweight, non-greasy, leave-in styling serum that helps to strengthen, repair and smooth hair that’s been overstressed, or is prone to frizz. This moisturizing styling aid works on wet or dry hair to smooth and hydrate the cuticle with Keratin & Chamomile to eliminate the signs of frizz, damage & split-ends. It also provides heat & UV protection.