Fine, flat hair has a habit of clocking off early — full of promise at 8am, deflated by lunch. The Redken Acidic Grow Full System Densifying Conditioner is the mid-lengths-to-ends pep talk that keeps thin hair standing tall, soft and suspiciously full-looking.
TL;DR: A lightweight, pH-balanced conditioner built for thin, flat or fine hair. Powered by azelaic acid, caffeine and prebiotics plus a 7% Densifying Complex, it rebalances the scalp with moisture, softens and detangles in an instant, and leaves hair looking fuller and thicker — minus the heavy, coated feeling most volume products leave behind. Vegan, sulfate-free and served in a generous 1L salon bottle.
Product Details and Benefits
- 7% Densifying Complex — the line's signature blend, formulated to leave thin, flat hair looking noticeably fuller and thicker after just one use.
- Azelaic acid — rebalances the scalp mantle's naturally acidic pH and helps smooth the cuticle for healthier-looking, more reflective hair. The "acidic" in Acidic Grow is the good kind.
- Caffeine and prebiotics — work to soothe and hydrate the scalp, giving fullness a healthy foundation to build on.
- Lightweight and non-weighing — conditions, softens and detangles without the greasy, flat aftermath that fine hair dreads.
- Strengthens against breakage — part of the Acidic Grow Full System that helps reduce hair fall from brushing and delivers the fullness of +5,000 hair fibres.*
- Fresh citrus-and-neroli fragrance — a warm, clean scent that lingers without shouting.
- Vegan and never tested on animals — no animal-derived ingredients or byproducts, and sulfate-free too.
- Generous 1L salon size — the back-bar bottle that outlasts your New Year's resolutions.
How to Use
- Shampoo first — ideally with the Redken Acidic Grow Full System Densifying Shampoo, its natural partner in crime.
- Squeeze the excess water from your hair, then work this conditioner through from mid-lengths to ends. Fine hair doesn't need it at the roots, so let the scalp sit this round out.
- Distribute evenly, then rinse thoroughly. Done.
Pro tip: fine hair drinks up whatever you hand it, so start with a five-cent-piece amount emulsified between your palms and comb it through with a wide-tooth comb — even coverage means every strand gets the slip and softness without a single section turning heavy or limp.
Why You'll Love It
Because fuller, softer, healthier-looking hair shouldn't cost you your volume — and this lightweight acidic conditioner delivers all three without dragging you down. Add the Redken Acidic Grow Full System Densifying Conditioner 1L to your cart and give thin hair the lift it's been quietly begging for.
The fullness of +5,000 hair fibres refers to results when using the complete Acidic Grow Full System of shampoo, conditioner, serum and spray. Source: Redken's official website, redken.com.
