How to Use Take a hazelnut size amount and work through towel-dried or dry mid-lengths and ends. Leave-in. For maximum effect, leave-in overnight. Technology - Inter-Amino-Bond-Builder: fortifies the hair from inside out by forming new ionic and hydrogen bonds. - MicroPROtec Complex: distributes essential care ingredients quickly and evenly and protects from color-fade-out. Key Ingredients - Peptides and amino acids penetrate into the hair cortex, targeting the damaged areas. - Compounds of red and brown algae extracts form ionic and hydrogen bonds with remaining hair proteins, embedding these peptides in the inner cortex. Fragrance Very delicate and fresh tea, wrapped by subtle orris and musks with a touch of velvet peach skin and precious cedarwood. Ideal For The Day & Night Bond Booster is ideal to reduce breakage & split ends by up to 99%. It is the hero product of the line. Stylist Tips Recommend the product as an emergency split-end care.