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Highlights
Summary
Instantly hydrate and detangle even the finest strands with Biolage's Hydra Source Daily Leave-In Tonic, infused and micro-dosed with hyaluronic acid and micro-filtered aloe vera for supreme softness and shine. Controls frizz and flyaways for frizz-free, manageable hair.
Benefits
- Instantly moisturizes and renews shine
- Lightweight formula detangles and tames flyaways
- Micro-filtered aloe vera and fermented hyaluronic acid provide intense hydration
- Conditions, detangles, renews shine, and optimizes moisture balance
- 6x more hydration after one use*
- 85% reduction in frizz after one use**
- Bio-based Aloe Vera nourishes the hair and polishes the cuticle
- Ultra-concentrated hyaluronic acid penetrates the hair fiber and seals the cuticle
Key Ingredients
- Micro-filtered aloe vera: Known for its moisture-retaining properties, aloe vera gently nourishes the hair and polishes the exterior of the hair cuticle, promoting lasting hydration, softness, and shine
- Fermented hyaluronic acid: Ultra-concentrated hyaluronic acid penetrates the hair fiber and seals the cuticle while enhancing intense, yet weightless hydration
- *Hydra Source Shampoo, Conditioning Balm and Leave-In Cream vs. non-conditioning shampoo. **Hydra Source Daily Leave-In Tonic vs. non-conditioning shampoo
Item 2637966
Spray onto damp hair, combing from root to tip, for an instant moisture boost and renewed shine. Helps shield locks from pollution and other environmental aggressors. Leave-in formula - 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
Write A REVIEWReview 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 ...
1074 results
Not for me
Hair Type Wavy Hair
I use other Biolage hydrasource products and absolutely love them. Not this one. My hair hates it. It makes my hair dry and so tangly. It doesn't smooth into my hair like the leave in conditioner cream. The leave in conditioner cream is a miracle worker. This is advertised here as a leave in conditioning tonic. By the conditioning balm which I also love. It says this is a leave in shampoo. So I don't know what this is. But it did nothing to make hair shiny soft or detangle. I used it twice after showering when my hair was damp. It caused damage. My comb got stuck. I had to go wash it out. I have been using it as a pre wash spray. I will use like this till it is gone and not repurchase. I notice no difference using it this way. But the scent. This way at least my hair doesn't get damaged.
Tames the Frizz!
Hair Type Wavy Hair
[I received this product in exchange for my honest review] Love an easy spray leave-in! This one bottle will last me a long time, and makes my hair super easy to comb through after washing. My hair is pretty curly naturally, and prone to frizz, plus I live in the desert and it gets super dry especially in the winter. Glad to have found this!

I would buy this product again
Hair Type Very Curly Hair
Na
I love it
Hair Type Wavy Hair
I received this product free in exchange for my honest review I'm in love with this hair cared line if you have dry damaged hair I really do recommend this hair care line it left my hair feeling so healthy and soft doesn't weigh them down or feel heavy all I recommend the shampoo conditioner and leave in!!!
[I received this product in exchange for my honest review] A
Hair Type Wavy Hair
[I received this product in exchange for my honest review] Awesome! .. . ...................................................,...,.............,.........................................