Loreal Expert Serie Liss Starter Ionene G Plus Ceramide Treatment 0.4oz: Pre-smoothing protective treatment. Rinse out. L"oreal Serie Expert Serie is an alpha hydroxy acid and incell-based pretreatment. This pre-treatment targets the cortex and cuticle for deep cleansing and reduced porosity to prime hair for a color service. This in-salon color resurfacing treatment soothes the hair"s surface and combats porosity weakness. This means the hair is then perfectly prepared for highlight application. Contains AHA which means that more damaged, sensitized areas are carefully targeted and selectively repaired to ensure an even color result.