Jack Black True Thickening Hair Density Foam (148ml)

Fuller-looking hair starts at the root. Jack Black's True Thickening Hair Density Foam is an aromatic, leave-in styling foam formulated to strengthen hair and skin at the root, add visible volume, and make hair look and feel noticeably fuller from the inside out. A specially formulated blend of ingredients - including the clinically backed Procapil complex - works directly at the root level to support healthier, stronger-looking hair over time.

The easy-to-apply foam absorbs quickly without leaving a crunchy or stiff residue, leaving hair feeling soft and flexible with a natural, healthy-looking shine. Peppermint provides a naturally energizing, cooling aromatic character, while Olive Leaf Extract and Organic Aloe round out the formula with antioxidant and soothing support. A versatile leave-in treatment that works seamlessly alongside other styling products for a fuller finish without compromise. 

Available in 148ml.

Who's It For 

True Thickening Hair Density Foam is ideal for anyone with fine, thinning, or flat hair who wants a leave-in treatment that actively supports the appearance of fuller, denser hair at the root with consistent use. It's a strong choice for those already using True Volume Thickening Shampoo who want to extend the thickening and volumizing benefits into their styling routine, and for anyone who wants a lightweight foam that adds body without stiffness or crunch. 

Key Benefits

• Strengthens at the Root - Procapil, a specially formulated complex, is designed to help strengthen skin and hair around the root for healthier-looking, fuller hair over time.
• Adds Visible Volume - Easy-to-apply foam adds body and fullness to fine or flat hair without weighing it down or leaving a stiff, crunchy finish.
• Natural, Healthy-Looking Shine - Leaves hair with a soft, flexible finish and a natural, healthy-looking shine that works well alongside other styling products.
• Cooling and Invigorating - Peppermint provides a naturally energizing, cooling aromatic sensation on the scalp during application.
• Antioxidant Scalp Support - Olive Leaf Extract is rich in antioxidants that help fight free radical damage and support a healthier scalp environment.
• Soothes the Scalp - Organic Aloe calms, soothes, and softens the scalp while supporting lightweight hydration at the root level. 

Scent Profile

True Thickening Hair Density Foam has a clean, invigorating herbal scent with cool peppermint at the forefront over a light botanical base. Refreshing and energizing during application - it fades comfortably as hair dries without leaving a heavy fragrance behind. 

Key Ingredients

• Procapil (Biotinoyl Tripeptide-1, Apigenin, Oleanolic Acid) - A clinically researched complex designed to help strengthen skin and hair around the root for healthier-looking, fuller hair with consistent use.
• Peppermint Oil (Mentha Piperita Oil) - A naturally energizing aromatic known for its cooling effects on the scalp and shown to support healthy-looking hair.
• Olive Leaf Extract (Olea Europaea Leaf Extract) - Rich in antioxidants that help fight free radical damage and support a healthier scalp and hair environment.
• Organic Aloe Leaf Juice Powder (Aloe Barbadensis Leaf Juice Powder*) - Calms, soothes, and softens the scalp while supporting lightweight hydration.
• Pomegranate Fruit Extract (Punica Granatum Fruit Extract) - A potent antioxidant that provides additional protective and nourishing support to the scalp.
• Nasturtium Flower and Leaf Extract (Nasturtium Officinale Flower/Leaf Extract) - A botanical known for its scalp-supporting and conditioning properties.
• Glycerin - A natural humectant that helps maintain moisture balance at the scalp and hair level. *Certified Organic 

How To Use

Massage one to two pumps of foam into clean, damp hair, working from roots to ends. Leave in and style as usual - no rinsing required. Can be layered easily with other styling products for added hold, texture, or finish. Use daily for best thickening and volumizing results over time. 

Why MASC Recommends This

True Thickening Hair Density Foam sits at the intersection of hair care and styling - it treats the scalp and root while also contributing to a fuller, more voluminous finished look. The Procapil complex gives it genuine thinning hair credentials beyond what a standard volumizing foam can offer, and the lightweight, non-crunchy foam texture makes it genuinely pleasant to use daily. It pairs naturally with True Volume Thickening Shampoo and Nourishing Hair & Scalp Conditioner for a complete Jack Black thickening hair routine, and works just as well layered under a styling product for those who want volume and hold in the same step. A smart, versatile addition to any hair care routine focused on fullness and density.