GIOVANNI Biotin & Collagen Hair Serum 2.75 oz — Lightweight Vegan Anti-Frizz Serum for Smoother, Shinier Hair

GIOVANNI Biotin & Collagen Hair Serum is a lightweight, vegan anti-frizz treatment that helps smooth, hydrate and strengthen hair with biotin, collagen and hyaluronic acid.

This salon-inspired serum is formulated to tame flyaways and add shine without heavy residue. Designed for everyday use, it combines strengthening ingredients like biotin and collagen with moisture-binding hyaluronic acid to improve manageability and leave hair feeling smoother. The 2.75 oz pump bottle is travel-friendly and suited to many styling routines.

How does this serum reduce frizz and flyaways?

The formula smooths the hair surface to reduce static and frizz while adding a luminous finish. Lightweight silicones and conditioning agents help seal cuticles so strands lie flatter, which cuts down on short-term frizz caused by humidity.

• Biotin and collagen support stronger-looking strands and smoother texture.
• Hyaluronic acid attracts and retains moisture for a soft hold.
• Quick-absorbing base avoids greasy buildup and limpness.

Will it weigh down fine or thin hair?

No — the serum is formulated to be non-greasy and easily spreadable, making it suitable for finer hair when used sparingly. Start with a pea-sized amount and work through mid-lengths to ends; add more only if needed for thicker sections.

• Use minimal product on the roots to preserve lift.
• Apply to damp hair before styling for even distribution.
• Layer with other lightweight styling products without heaviness.

How should I incorporate it into my styling routine?

Apply to clean, towel-dried hair as a leave-in smoothing serum before blow-drying or air-drying. It also works as a finishing touch on dry hair to tame flyaways and add shine without rewetting or weighing hair down.

• For blow-drying: use 1–3 drops depending on hair length and thickness.
• For touch-ups: smooth a tiny amount over flyaways and frizz-prone areas.
• Safe to pair with heat protectants and styling sprays.

What ethical and ingredient standards does the product meet?

GIOVANNI positions this serum as vegan and cruelty-free, following the brand’s longstanding commitment to combining natural elements with salon-quality performance. The product avoids harsh chemicals commonly excluded by eco-conscious consumers and is Leaping Bunny certified for cruelty-free sourcing.

• Vegan formulation — no animal-derived ingredients.
• Leaping Bunny certified cruelty-free label.
• Designed to bridge natural and professional haircare practices.

Who is this for? The GIOVANNI Biotin & Collagen Hair Serum is ideal for anyone looking to control frizz and enhance shine without heavy oils — from wavy and curly textures that need definition to straight hair seeking sleekness. It’s especially helpful for people wanting a clean, vegan product that supports manageability and a polished finish during everyday styling and travel.

Ingredients

INGREDIENTS: Aqua (Purified Water), Cetearyl Alcohol, Biotin, Vegetable Collagen, Behentrimonium Chloride, Sodium Hyaluronate (Hyaluronic Acid), Citrullus Lanatus (Watermelon) Fruit Extract, Behentrimonium Methosulfate, Lactobacillus/Fragaria Ananassa (Strawberry) Fruit Ferment Filtrate, *Vaccinium Angustifolium (Blueberry) Fruit Extract, Polyquaternium-47, Polyquaternium-37, *Actinidia Chinensis (Kiwi) Fruit Extract, Polyquaternium-11, *Euterpe Oleracea (Acai) Fruit Extract, Fragrance, *Glycerin, *Cocos Nucifera (Coconut) Oil, Hydrogenated Castor Oil/Sebacic Acid Copolymer, Citric Acid , Phenoxyethanol, Dehydroacetic Acid, Benzyl Alcohol. *Organically Produced Ingredient