Hask Biotin Boost Thickening Shampoo: What You Need to Know

Hask’s Biotin Boost Thickening Shampoo is a widely available drugstore option built around what the brand calls a “Tri-Level Thickening Complex” of biotin, collagen, and coffee. Here’s what that actually means at the ingredient level.

The cleansing base

Unlike many drugstore volumizing shampoos, this one is formulated without sulfates — it uses sodium C14-16 olefin sulfonate as its primary surfactant, a milder cleanser class than sodium lauryl or laureth sulfate, along with cocamidopropyl betaine as a co-surfactant. It’s also formulated without parabens, phthalates, or drying alcohol, which is a genuinely gentler profile than a lot of comparably priced thickening shampoos.

The “Tri-Level Thickening Complex”

• Biotin — present mainly as a marketing anchor; as covered in our biotin shampoo guide, topical biotin’s realistic contribution is cosmetic, not restorative.
• Hydrolyzed collagen — a protein ingredient that works the same way most protein-based volumizers do: a temporary, surface-level plumping effect on the hair shaft that washes out with the next shampoo.
• Coffee seed oil — positioned as a strand-strengthening and volumizing ingredient. Caffeine itself has some laboratory and small-study support for stimulating follicle activity, but the amount and contact time in a rinse-off shampoo make a meaningful effect on hair growth unlikely; treat this as a supporting, not primary, ingredient.

Who this suits

A reasonable, accessible choice if you want a sulfate-free thickening shampoo at a drugstore price point, with realistic expectations set at cosmetic volume and strand feel rather than hair growth or density change. If your priority is actually addressing thinning rather than styling texture, our does shampoo cause hair loss guide and a dermatologist visit will get you further than any ingredient combination in a shampoo.