Olaplex's 4-in-1 Moisturizing Masque has a concentrated, restorative formula that adds intense hydration while providing shine and body to hair. It is an ideal mask for very damaged and mistreated hair. Among the benefits it brings to the hair are:. Add body to your hair. Fights hair dryness. Recovers broken or damaged hair links. Creates a protective layer that strengthens the hair so it breaks much less.