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Benefits
Biolage Full Density Conditioner for thin hair is infused with biotin and nourishes thinning hair while building hair resiliency from root to tip. This creamy formula leaves hair shiny-looking and soft-feeling. FULL DENSITY system of Shampoo and Conditioner nourishes & fortifies thinning hair leaving hair fuller-looking and healthier-feeling hair after just one use*. This system promotes healthy scalp and strong lengths for thicker-feeling hair.
*vs. non-conditioning shampoo
Key Benefits
KEY ACTIVE INGREDIENTS:
Biotin for strength & density. Increases hair density by strengthening the fiber while minimizing split ends and breakage
Zinc PCA to rebalance scalp. Helps reduce hair loss while rebalancing and purifying scalp for healthier-feeling hair from root to tip Gluco-omega to promote hair growth
*vs. non-conditioning shampoo
- Paraben-Free
- Sulfate-Free
- Silicone-Free
- Mineral Oil-Free
- Artificial Colorant-Free
- Featuring Biolage’s iconic AromaScience fragrance
- Suitable for Color Treated Hair
- Certified cruelty free under the Leaping Bunny Program
- 100% Vegan formulas*
- 100% recycled bottles**
- *no animal derived ingredients
- **excluding cap
- **33.8 fl. oz., 13.5 fl. oz., 8.5 fl. oz., 7.8 fl. oz., 3 fl. oz., 1.69 fl. oz. bottle
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Before and After
*Full Density Shampoo, Conditioner & Densifying Spray vs. non-conditioning shampoo
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Ingredients
Key Ingredients
- Biotin
- Zinc PCA
Full Ingredient List
Aqua / Water / Eau • Cetearyl Alcohol • Glycerin • Behentrimonium Methosulfate • Amodimethicone • Parfum / Fragrance • Behentrimonium Chloride • Phenoxyethanol • Isopropyl Alcohol • Limonene • Trideceth-6 • Chlorhexidine Dihydrochloride • Hexyl Cinnamal • Coumarin • Benzyl Alcohol • Cetrimonium Chloride • Linalool • Amyl Cinnamal • Zinc Pca • Biotin • Safflower Glucoside • Geraniol • Tocopherol • Sodium Citrate
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How To Use
After FULLDENSITY Shampoo, massage into wet hair. Leave on 1-3 minutes. Rinse. For maximum results, use the Densifying Spray Treatment to instantly work on the surface of existing strands and expand the hair diameter. For extra thickening results, follow with the Densifying Spray Treatment.
Biolage - Full Density - Thickening Conditioner
Estimate delivery times: 2-3 days.
Return within 30 days of purchase.
Ask a question
Return Policy
Love It or Return It – Prohair’s Hassle-Free Return Policy
We want you to love every purchase from Prohair.ca. If not, no worries — we've made returns as easy and transparent as possible.
Return Window: 14-Day Guarantee
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You have 14 days from the delivery date to return any item for any reason.
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Products must be unused, in original condition and packaging.
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Returns of used or opened items are not accepted due to hygiene standards.
How to Initiate a Return
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No need to contact us!
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Simply log in to your Prohair.ca account, visit your order history, and select the item(s) to return.
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Print the return label and ship it back to us.
Note: Returns must be shipped within Canada.
Who Pays Return Shipping?
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If you're returning an item for personal reasons, the return shipping cost is yours to cover.
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If we made a mistake (wrong item, damaged item, etc.), we’ll cover the full cost, including shipping.
Non-Returnable Items Due to hygiene and safety reasons, we cannot accept returns on:
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Hair extensions
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Shavers, clippers & clipper blades
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Used shears or skin-contact tools
Gifts, Promotions & Freebies
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Items received as part of a promotion must be returned with the original order.
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Free promotional items cannot be returned alone.
Refunds
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All refunds go back to the original payment method.
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Please allow 5–7 business days after we receive your return to process the refund.
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Shipping fees are only refunded if the return is due to an error on our end.
In-Store Purchases
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Items bought in-store must be returned to a physical location — not by mail.
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Return with your receipt within 14 days for a full refund.
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No receipt? We'll offer store credit at the item's lowest sale price within the past 30 days.
Need Help?
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Visit our Returns & Exchanges page.
Pro tip: Keep your return tracking number — we can’t process a return without proof of delivery!
Infographic suggestions to go with this text on your Returns page:
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Timeline Bar: Showing "Order Received → 14 Days → Return Deadline"
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3-Step Return Process: (1) Log in → (2) Click return → (3) Ship it back
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Who Pays What: Side-by-side chart ("Your Choice" vs "Our Mistake")
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Checklist Visual: What’s accepted: New, Sealed — What’s not: Used, Opened
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Refund Clock: 5–7 Days to Process
Guaranteed Safe Checkout

Biolage - Full Density - Thickening Conditioner
Nourishes hair while building hair resiliency from root to tip.
FULL DENSITY Conditioner for thin hair is infused with biotin and nourishes thinning hair while building hair resiliency from root to tip. This creamy formula leaves hair shiny-looking and soft-feeling.
Size |
1L |
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