Biolage Hydra Source Daily Leave-In Tonic 13.5 fl oz — Lightweight Spray that Hydrates & Detangles

Biolage Hydra Source Daily Leave-In Tonic is a lightweight, leave-in spray that hydrates, detangles, reduces frizz and primes hair for styling.

Formulated for dry or color-treated hair, this spray combines micro-filtered aloe vera and fermented hyaluronic acid to deliver immediate moisture and improved manageability without weighing strands down. The formula is vegan and packaged with sustainability in mind, using mostly recycled plastic. Use it after cleansing or between washes to refresh texture, add shine and help protect hair from heat styling when you blow-dry or flat-iron.

How does this tonic restore hydration without leaving hair greasy?

The tonic uses finely measured doses of hydrating actives that penetrate and attract moisture rather than coating the hair with heavy oils. Its lightweight spray vehicle distributes product evenly so you get hydration where it’s needed most—mid-lengths and ends—while roots stay balanced. The result is softer, more pliable hair that still feels natural to the touch.

• Micro-dosed fermented hyaluronic acid attracts and holds moisture in the hair fiber.
• Micro-filtered aloe vera conditions without adding weight.
• Fine mist formula for targeted application on damp or dry hair.

Can it help when detangling and reducing frizz?

Yes—this tonic smooths cuticles and adds slip to the hair surface, making combing easier and reducing friction that causes frizz. Regular use visibly tames flyaways and improves shine, especially when paired with complementary products from the Hydra Source collection. It’s designed to reduce frizz while maintaining flexible movement.

• Slip-enhancing ingredients make wet detangling gentler on fragile strands.
• Softening agents reduce flyaways and static for a sleeker finish.
• Works alone or layered with conditioner and styling products for added control.

Will this protect my hair during blowouts or heat styling?

The tonic acts as a lightweight primer before heat styling by conditioning the hair and smoothing the surface, helping tools glide more easily. While it supports styling and shields against styling-related dryness, it should be used alongside a dedicated heat protectant for high-temperature tools if you need maximum thermal protection. It enhances blowout results by promoting even heat distribution and reducing frizz.

• Prepares hair for blow-drying by improving manageability and reducing tangles.
• Smooths strands so brushes and irons move with less pulling.
• Pairs well with heat-protection products for added defense at high temperatures.

How do you use it in a daily hair routine?

Lightly mist the tonic on damp, towel-dried hair and comb through to distribute. Do not rinse; style as usual—air-dry or blow-dry for a polished finish. You can also spritz on dry hair between washes to refresh texture, reduce static and revive shine.

• Apply to damp hair after shampoo and conditioner for best hydration results.
• Comb through from mid-lengths to ends to detangle and distribute product.
• Reapply sparingly on dry hair to refresh styles or calm flyaways.

Who is this for: Biolage Hydra Source Daily Leave-In Tonic is intended for people with dry, brittle or color-treated hair who want lightweight hydration, easier detangling and improved styling results. It suits those seeking a vegan, salon-grade leave-in that refreshes between washes and supports smoother blowouts without heavy residue. Recommended for anyone wanting softer, shinier hair with reduced frizz and enhanced manageability.

Ingredients

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