Soapbox Biotin Shampoo for Thinning, Fine Hair — 1L Pump, Volumizing & Repairing with Vegan Collagen

Soapbox Biotin Shampoo is a 1-liter volumizing and repairing shampoo formulated with biotin, vegan collagen, and superfruit extracts to help strengthen hair, add fullness, and improve manageability.

This concentrated 33.8 oz pump bottle combines biotin, coconut-derived nutrients, vegan collagen, elderberry and a five-times vitamin blend to nourish weakened, dry, or flat hair. Soapbox designed this shampoo to be color-safe, free of harsh sulfates and silicones, and suitable for a wide range of hair textures. The lightweight formula focuses on improving hair body, conditioning the cuticle, and supporting healthier-looking strands when used with complementary conditioner.

How does this shampoo increase volume without weighing hair down?

The formula uses biotin and vegan collagen to help thicken the appearance of individual strands while lightweight plant oils provide moisture without residue. It rinses clean and is free from heavy silicones that can flatten fine hair. Regular use lifts roots and enhances natural body so styling shows more fullness.

• Biotin and collagen for visibly fuller-looking strands
• Light moisturizing agents like plum oil and coconut-derived nutrients
• Sulfate- and silicone-free to avoid buildup and heaviness
• 33.8 oz pump for easy dispensing and salon-style use at home

Will this shampoo help repair dry, damaged ends?

Soapbox Biotin Shampoo includes coconut-derived ingredients and a blend of vitamins to help restore moisture to dry, brittle hair and smooth the cuticle. While shampoo cleanses, its nutrient-rich formula prepares hair for deeper conditioning and treatments that further reduce breakage. Paired with the matching Biotin Conditioner, it supports improved texture and manageability.

• Coconut nutrients bind to hair proteins to help protect and moisturize
• Vitamins E, K and a 5x vitamin blend for surface nourishment
• Use with Soapbox Biotin Conditioner for better repair results
• Color-safe and gentle on chemically treated hair

Is this shampoo safe for colored or chemically treated hair?

Yes — the formula is color-safe and free from harsh sulfates that can strip dye or weaken treated hair. Its plant-based ingredients are gentle on sensitive scalps and help maintain color vibrancy between salon visits. For best results, follow with a color-safe conditioner to seal and protect cuticles.

• Sulfate-free cleansing that reduces color fade
• No silicones or harsh detergents that cause buildup
• Gentle enough for frequent use on most hair types
• Packed in a 1 L pump bottle for consistent, controlled application

How should I use the 1 L pump bottle for salon-style results at home?

The dispenser makes portioning easy whether you’re shampooing daily or less often. Apply a quarter-sized amount to wet hair, lather, and focus on the scalp; rinse thoroughly and repeat if needed. Follow with Soapbox Biotin Conditioner for improved detangling and enhanced softness.

• Dispense with one or two pumps depending on hair length
• Massage into scalp to remove buildup and stimulate circulation
• Rinse well and pair with the matching conditioner
• Large pump bottle is ideal for households or frequent use

Who is this for? Soapbox Biotin Shampoo is aimed at people with fine, thin, or weakened hair who want more lift and improved manageability without heavy ingredients. It also suits anyone seeking a cruelty-free, plant-forward cleansing option that’s gentle on color-treated hair and convenient in a large pump format. If you need a daily-friendly cleanser that adds visible body, helps restore moisture, and pairs easily with targeted conditioners and styling products, this 1 L Soapbox formula fits that routine.

Ingredients

Water (Aqua), Cocamidopropyl Betaine, Sodium C14-16 Olefin Sulfonate, Glycerin, Sodium Chloride, Biotin (Vitamin B7), Prunus Domestica (Plum) Seed Oil, Sambucus (Elderberry) Nigra Seed Oil, Persea Gratissima (Avocado) Fruit Extract, Carica Papaya (Papaya) Fruit Extract, Musa Sapientum (Banana) Fruit Extract, *Hydrolyzed Soy Protein, *Rice Amino Acids, *Proline, *Hydrolyzed Adansonia Digitata Extract, Butyrospermum Parkii (Shea) Butter, Aloe Barbadensis (Aloe Vera) Leaf Juice, Ascorbic Acid (Vitamin C), Panthenol (Vitamin B5), Pantothenic Acid, Tocopheryl Acetate (Vitamin E), Folic Acid (Vitamin B9), Sodium Lauryl Sulfoacetate, Cetrimonium Chloride, Benzyl Alcohol, Disodium Laureth Sulfosuccinate, Guar Hydroxypropyltrimonium Chloride, Citric Acid, Dehydroacetic Acid, Linalool, Hexyl Cinnamal, Limonene, Propylene Glycol, Fragrance (Parfum). * Bioidentical Vegan Collagen.