Matrix Biolage Professional Full Density Densifying Spray 4.2 oz is a lightweight, leave-in treatment specifically engineered to increase hair diameter and deliver visibly thicker, fuller-looking hair from root to tip. Formulated with Biotin, Zinc PCA, and Gluco-Omega, this targeted treatment coats each strand to expand its diameter, reinforcing fragile hair against mechanical breakage during styling. It instantly amplifies overall hair mass and body without leaving behind sticky residue, weight, or crunchiness. Ideal for fine, thinning, or limp hair types seeking noticeable density, volume, and scalp-to-strand fortification.

What It Does
• Expands hair strand diameter to instantly create thicker, fuller-looking hair
• Formulated with Biotin and Zinc PCA to strengthen weak, fine fibers against breakage
• Delivers weightless body, lift, and volume from the roots down through the lengths
• Smooths and conditions the hair surface without leaving a greasy or sticky film
• Fortifies hair structure to minimize future mechanical breakage and split ends

Key Benefits
• Leave-in densifying and bodifying spray treatment for fine or thinning hair
• Formulated with Biotin, Zinc PCA, and Gluco-Omega complex
• Paraben-free, silicone-free formula safe for color-treated and natural hair
• Reduces hair breakage up to 95% when used as part of the Full Density system
• Precision spray nozzle for easy root-to-tip application

How to Use
• Towel-dry hair after shampooing and conditioning with Biolage Full Density Shampoo and Conditioner
• Section wet hair and spray generously directly onto the scalp and throughout mid-lengths to ends
• Gently massage into scalp and comb through for even distribution
• Do not rinse out; style as usual with heat tools or air-dry

Keywords
Matrix Biolage Professional Full Density Densifying Spray 4.2 oz, Biolage Full Density leave in treatment, biotin hair thickening spray, leave in densifying spray for fine thinning hair, Matrix 125ml full density treatment, hair diameter expansion spray.