BASE-K Thickening Shampoo for Fine, Thinning Hair — 9 fl oz, Sulfate-Free Vegan Formula

The Matcha Rinse is a sulfate- and silicone-free thickening shampoo that builds visible fullness for fine, flat, or thinning hair while preserving color and scalp moisture.

Designed in the spirit of Korean hair care, BASE-K's Matcha Rinse combines antioxidant-rich matcha with a peptide complex to gently cleanse, fortify strands, and create a cloud-soft lather without harsh sulfates or silicone coatings. The formula targets the appearance of density at the root, supports scalp comfort, and plays well with color-treated or keratin-treated hair. Daily use establishes a foundation for fuller-looking hair when used alongside complementary BASE-K products.

How does The Matcha Rinse thicken fine, flat hair?

The shampoo pairs matcha antioxidants with Acetyl Tetrapeptide-3 and clover flower extract to strengthen and reinforce hair fibers, helping strands appear thicker over time. Rosemary extract supports microcirculation at the scalp to create a healthier environment for visible fullness. The result is cosmetic thickening that builds with repeated use rather than temporary coating.

• Peptide complex (Acetyl Tetrapeptide-3) to fortify hair fibers
• Matcha to detoxify and energize the scalp
• Clover flower and rosemary extracts to support strand resilience and scalp circulation

Will this shampoo strip color or dry my scalp?

No—The Matcha Rinse is formulated without sulfates and harsh detergents, so it cleanses effectively while maintaining the scalp’s natural moisture barrier. It’s labelled safe for color-treated, balayaged, and keratin-treated hair, delivering lather that rinses clean without leaving silicone build-up.

• Sulfate-free cleansing that preserves color vibrancy
• Silicone-free finish to prevent root weighing and buildup
• Clinically mindful surfactant blend for daily or frequent use

How should I use it for best results?

Massage into wet scalp and roots for 2–4 minutes to allow the active ingredients to absorb and the luxurious lather to develop. Rinse thoroughly and follow with The Rice Cream Conditioner; for a full routine, incorporate the Bamboo Tonic to amplify density benefits. One 9 fl oz (266 ml) bottle provides roughly 25–30 washes, depending on usage.

• Apply to wet hair, massage 2–4 minutes, then rinse
• Follow with The Rice Cream Conditioner for hydration and slip
• Use daily or every other day; pair with Bamboo Tonic for fuller-looking results

Is this shampoo clean and cruelty-free?

The Matcha Rinse is vegan, cruelty-free, dermatologist tested, and free from parabens, sulfates, and silicones. It offers a sensory experience inspired by Korean rituals—a sunlit citrus and white floral scent—while meeting modern clean-beauty standards.

• Vegan and cruelty-free formulation
• Paraben-, sulfate-, and silicone-free
• Gentle fragrance and dermatologist-tested

Who is this for: The Matcha Rinse suits people with fine, flat, or thinning hair who want a gentle daily shampoo that promotes thicker-looking strands without coating or stripping. It's particularly useful for those with color-treated or chemically smoothed hair seeking a clean, high-lather wash as the foundation of a targeted hair-density routine.

Ingredients

Aqua (Water), Sodium Cocoyl Isethionate, Sodium Lauroyl Methyl Isethionate, Cocamidopropyl Hydroxysultaine, Cocamide MIPA, Glycerin, Fragrance/Parfum, Acetyl Tetrapeptide-3, Trifolium Pratense (Clover) Flower Extract, Rosmarinus Officinalis (Rosemary) Leaf Extract, Curcuma Longa (Turmeric) Root Extract, Bambusa Vulgaris Extract, Camellia Sinensis Leaf Extract, Oryza Sativa (Rice) Extract, Niacinamide, Biotin, Coffea Arabica (Coffee) Seed Extract, Propanediol, Olea Europaea (Olive) Fruit Oil, Magnolia Officinalis Bark Extract, Aloe Barbadensis Leaf Juice, Apium Graveolens (Celery) Seed Extract, Serenoa Serrulata Fruit Extract, Betaine, Isopentyldiol, Pseudozyma Epicola/Argania Spinosa Kernel Oil/Camellia Japonica Seed Oil/Camellia Sinensis Seed Oil/Sunflower Seed Oil/Sweet Almond Oil Ferment Extract Filtrate, Caprylic/Capric Triglyceride, Sunflower Seed Oil Glycerides, Pentylene Glycol, Phytantriol, Phenoxyethanol, Butylene Glycol, Disunfloweroylethyl Dimonium Chloride, Guar Hydroxypropyltrimonium Chloride, Algin, Sodium Benzoate, Lauryl Lactyl Lactate, Citric Acid, Ethylhexylglycerin, Dimer Dilinoleyl Dimer Dilinoleate, Hydroxyacetophenone, Tocopherol, Polyquaternium-7, Dextran, Limonene