"I’ve been growing my hair out for a longer style, and I have noticed a big difference in how much quicker it is growing. My hair has also felt stronger and doesn’t break as easily."
- MK
Safe Ingredients
Ultra Gentle
Eco-friendly
Vegan
Cruelty Free
Biotin and Collagen Vegan Shampoo with Argan Oil
Vegan Collagen & Biotin combine to strengthen strands and increase volume, while Soapberry and other rich botanicals gently cleanse.
$21.99
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Who is it for
Struggling with fine, lifeless hair? This volumizing Biotin shampoo offers a targeted solution to support volume and strength while being gentle on sensitive scalps.
Packed with a revitalizing blend of Biotin and Vegan Collagen, it’s designed to liven up weak strands and nurture your scalp with plant-based care.
This hair-thickening shampoo is your go-to for:
Thinning hair concerns: Strengthens hair from root to tip, promoting fuller, more resilient strands.
Sensitive scalp care: Gentle botanicals like Aloe Vera and Olive Leaf soothe without discomfort.
Weightless hydration: Argan Oil and Vegan Collagen deliver moisture without heaviness, leaving hair fresh and clean.
Ideal for addressing hair breakage, boosting volume, or incorporating a vegan-friendly option into your routine, this shampoo caters to your hair’s unique needs with care.
What is it
A thicker, fuller hair shampoo that cleanses, strengthens, and volumizes fine hair with every wash.
Formulated with Wild Soapberry, Biotin, and Vegan Collagen, this sulfate-free shampoo nourishes hair while supporting scalp health.
Boosts strength: Biotin and Vegan Collagen fortify hair, reducing the look of breakage and thinning.
Hydrating and balancing: Black Oats and Argan Oil help hair retain moisture without feeling heavy.
Calming aromatherapy: Sicilian Lemon and Tea Tree Oils offer a refreshing tingle and uplifting scent.
Tree to Tub is reshaping how you care for your hair—offering products that promote natural strength, radiant volume, and sustainability for you and the environment.
No artificial fragrances, sulfates, parabens, edta, animal by-products, phthalates
Sustainable Packaging
rPET is an eco-friendly plastic that is created by collecting, sterilizing, and recycling consumer-used PET plastics, such as water bottles.
rPET stands for recycled polyethylene terephthalate and is 100% safe to use for our products. In fact, rPET is FDA approved and widely used to create bottles, packaging for food, and even shoes!
At Tree To Tub, our goal is to use sustainable materials to package all of our products in the near future. And that's why we use rPET to create the bottle of our Moisture Boost Biotin Shampoo!
If you're not familiar, using rPET is an effective way of helping Mother Nature because:
rPET is 100% recyclable, lessening the need to produce Virgin PET
rPET is made from recycled materials, reducing the amount of plastics in landfills or the ocean
rPET requires 79% less energy to produce compared to Virgin PET, because it lessens need to extract natural resources
rPET reduces greenhouse gas emissions by 71%, because it's lightweight and easy to transport
Have peace of mind knowing that whenever you buy our Moisture Boost Biotin Shampoo, you're helping Mother Nature too 🌴
A quick heads up: tiny (harmless) black spots may appear on our rPET bottles because not all foreign particles can be filtered at 100%. Don't worry, they don't alter our naturally soothing products in any way––it just means we used recycled materials to package them!
PAIRS PERFECTLY WITH
"I’ve been growing my hair out for a longer style, and I have noticed a big difference in how much quicker it is growing. My hair has also felt stronger and doesn’t break as easily."
- MK
Safe Ingredients
Ultra Gentle
Eco-friendly
Vegan
Cruelty Free
Pause or cancel anytime
Frequently Asked Questions
How do Vegan Collagen and Biotin help with thinning hair?
Vegan Collagen and Biotin team up to give your hair a serious boost! Biotin strengthens your hair strands from the inside out, while Vegan Collagen helps retain moisture, giving your hair that full, bouncy look. It’s like giving your hair lift and vitality so it looks thicker and healthier.
What are soapberries?
Soapberries, AKA soap nuts, are Mother Nature's soap alternative (she has one for everything)! These powerhouse fruits come from trees and shrubs in the Sapindus genus and are packed with saponin, a natural surfactant that gently cleanses your skin without stripping it dry and killing healthy bacteria. They’ve been used by people around the world for thousands of years—long before soap was ever invented! They are an eco-friendly alternative to harsh chemicals and the secret sauce in many of our luxurious, naturally sudsy products.
Are your products organic?
While our products are not certified organic, we strive to use organic ingredients wherever possible and source sustainably. All organic and non-organic ingredients alike meet the highest quality and safety standards. Our soapberries are wild-grown and harvested in Taiwan, meaning they can’t be certified organic but are as clean and natural as can be. We only use 100% natural essential oils for our products with fragrance.
Are your products ethically sourced?
Absolutely! All of our products are Peta Approved cruelty-free and vegan. We strive to maintain visibility over our entire supply chain and only work with suppliers, manufacturers and partners that share our values around protecting both people and the planet.
Made with Mother Nature's finest natural ingredients
Your hair and skin deserve the best, which is why we constantly scour the globe for the most effective and gentle natural ingredients and painstakingly combine them into formulas that truly work for both people and the planet. Here are some of the botanical superstars that make this shampoo so special:
Soapberry
Biotin
Black Oats
Soy
Argan Oil
Customer Reviews
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