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Highlights
Summary
Instantly hydrate and detangle even the finest strands with Biolage Hydra Source Daily Leave-In Tonic. This leave-in conditioner, with micro-filtered aloe vera and fermented hyaluronic acid, delivers softness, shine, controls frizz, repairs dry, tangle-prone hair, and protects against heat damage.
Benefits
- Quenches dry hair with weightless moisture, instantly detangling and conditioning for supreme softness and manageability.
- Tames flyaways and controls static, delivering 85% reduction in frizz for smooth, polished hair.
- Renews hair shine and optimizes moisture balance, contributing to overall hair health.
- Lightweight formula doesn't weigh hair down.
Key Ingredients
- Aloe: Nourishes hair, promoting lasting hydration.
- Hyaluronic Acid: Seals the cuticle while boosting hydration to strands.
Research Results
- 85% reduction in frizz after one use**
- **Hydra Source Daily Leave-In Tonic vs. non-conditioning shampoo.
Item 2637966
For an instant moisture boost and renewed hair shine, spray this detangler onto damp hair, combing from root to tip. This leave in conditioner helps shield locks from pollution and other environmental aggressors. No need to rinse!
Aqua / Water / Eau, Cetearyl Alcohol, Polysorbate 20, Behentrimonium Chloride, Parfum / Fragrance, Orbignya Oleifera Seed Oil, Cetyl Esters, Amodimethicone, Sodium Benzoate, Isopropyl Alcohol, Citric Acid, Limonene, Tocopherol, Trideceth-6, Chlorhexidine Dihydrochloride, Hexyl Cinnamal, Coumarin, Sodium Hyaluronate, Xylose, Panthenol, Ethylhexyl Salicylate, Aloe Barbadensis Leaf Juice, Cetrimonium Chloride, Linalool, Amyl Cinnamal, Geraniol, Isoeugenol, Alpha-Isomethyl Ionone, Hydroxycitronellal, Benzyl Benzoate, Cinnamyl Alcohol, Citronellol, Benzyl Alcohol, Potassium Sorbate
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Reviews
Review Snapshot
by PowerReviews
Ratings Distribution
Hair Type
Most Helpful Positive Review
Recommend for dry hair! Best trio for the best hair.
I received this product in exchange for my honest review. The Biolage HydraSource Daily Leave-In Tonic is the final step in my HydraSource hair care trio, and it's the cherry on top. After loving the shampoo and detangling solution, I added this leave-in to my routine and instantly noticed an upgrad...
Most Helpful Critical Review
Good but not for my hair type, application needs improvement
[I received this product in exchange for my honest review] I have thin density 2a medium texture hair that is currently mid-back length. I tried this product a couple of times. For my first time with this product, I used the accompanying shampoo then the accompanying conditioner beforehand. It says ...
1088 results
Best leave-in conditioner for hair!
Hair Type Straight Hair
[I received this product in exchange for my honest review] I received this complimentary product from Biolage in exchange for my honest review, and I'm really impressed with the Biolage Hydrasource Leave-In Conditioner! It works and smells amazing—a fresh, clean scent that's not overpowering. I use it after showering on towel-dried hair, and it leaves no residue while making my hair feel soft, hydrated, and smooth. Just a few pumps go a long way, and it never leaves my hair feeling greasy or weighed down. It's been a game-changer for detangling—combing out knots and tangles is now easy and pain-free, even with long hair. My hair feels stronger, more manageable, and looks healthier overall. It provides just the right amount of moisture without making my hair flat, and I've noticed less breakage when styling. This leave-in has definitely earned a permanent spot in my haircare routine. Highly recommend!

Be careful if you're hair tends to look greasy
Hair Type Straight Hair
[I received this product in exchange for my honest review] I wanted to love this but unfortunately my hair is too fine and looks too greasy depending on the product I use. It works great at keeping hair feeling hydrated but I think my hair isn't porous enough to benefit from it on a daily basis.
An amazing leave-in!
Hair Type Wavy Hair
I received this product in exchange for my honest review. Absolutely love this product! I use it daily no matter how I'm styling my hair that day. It is great at detangling my coarse wavy hair and helps my getting ready process immensely. It is a sleek bottle and doesn't take up much room on my bathroom counter. Highly recommend!

Decent hair tonic.
Hair Type Straight Hair
[I received this product in exchange for my honest review] Product was easy to apply into my hair and had an inoffensive smell. I did notice a slight moisturizing effect similar to a traditional hair oil.
Amazing
Hair Type Wavy Hair
This leaving in detangler is literally one of the best hair products I've ever used using the whole system together like the shampoo conditioner, and the after spray has made my hair so luscious and it's beautiful for the nice summertime season definitely would recommend