Kérastase Première Sérum Filler FondamentalThe Benefits: This luxurious hair serum repels humidity, deeply nourishes hair and locks out frizz for 3xs smoother hair*. This serum protects from heat damage up to 450F. It visibly reduces the appearance of split ends and provides 99% stronger hair* and 85% shinier hair**. Protects against heat up to 450 Repel humidity and locks out frizz for smoother hair Hair is stronger and shinier How to Use: Apply on towel dried hair. Leave In. Blow dry and