I bought these in bulk, but I don't like the scent, so I don't think I'll be able to use them all, and I'm putting them up for sale. Unopened. I purchased these from iHerb this month, September 2025. This hair mask contains keratin and biotin to smooth and strengthen hair. - Brand: ADVANCED CLINICALS - Product Name: KERATIN SLEEK SMOOTH HAIR MASK - Contents: 340g - Product Name: BIOTIN STRENGTHENING HAIR MASK - Contents: 340g