Leave-in Hair Serum with Hairdensyl Complex & Red Onion Extract
14,99 €
Shampoo and mask rinse off — this serum stays. All five Cobiosa complex ingredients — collagen, honey, amino acids and energy molecules — keep working on your hair all day. Red onion quercetin adds antioxidant protection, while almond oil ester softens without weighing down. No rinsing needed.
🌿 HairDensyl Complex — 5 actives that stay on the hair
🧅 Red Onion Extract — quercetin antioxidant protection
🌿 Almond Oil Ester — softens without greasiness
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Secure paymentLeave-In Hair Serum with HairDensyl Complex and Red Onion Extract
The HairDensyl shampoo cleanses and adds volume. The mask locks it in and adds Crambe phytosterol smoothness. But both are rinsed off — and some of the actives go with the water. This serum is the third step that stays. A leave-on formula where all five HairDensyl components and red onion quercetin keep working on hair all day.
Why Leave-On Matters for HairDensyl
The five HairDensyl ingredients — collagen, honey polysaccharides, NMF components — are more effective the longer they stay in contact with the hair fibre. In the shampoo, contact is 1–2 minutes. In the mask, 5–10 minutes. In the serum — all day. This is the level where:
- Soluble collagen can fully wrap the hair fibre and deliver lasting volume
- Honey extract polysaccharides can absorb and bind moisture long-term
- Sodium PCA and serine can continuously attract moisture from the surrounding air
- Glycogen can deliver more sustained vitality to hair roots
Red Onion Quercetin — Lasting Antioxidant Protection
In the shampoo and mask, red onion extract is in contact with the scalp only during washing. In the serum, Allium Cepa quercetin stays on the hair and scalp all day — delivering lasting antioxidant protection against environmental factors (UV, pollution, dry air).
Almond Oil Ester — Softness Without Weight
Almond oil polyglyceryl-4 esters — the same ingredient found in the silk amino acid serum. Not ordinary almond oil but its soluble derivative. Gives hair softness and smoothness without greasiness. Hair feels light and shiny, not heavy.
Conditioning and Protection
- Polyquaternium-7 — a conditioning polymer that in a leave-on formula creates a lasting protective layer. Reduces static and flyaways all day.
- Sea Buckthorn Fruit Extract — antioxidant protection for hair and scalp.
- Glycerin — a humectant.
Texture and Feel
A lightweight, fluid serum in spray format. When spritzed, it produces a fine mist that settles evenly on hair. No greasy or sticky feel. Hair feels fuller, smoother and shinier after application.
How to Use
- Spritz onto clean damp or dry hair from 20–30 cm distance.
- Focus on hair length and ends, but can also be lightly spritzed on the scalp at the roots — unlike the silk serum, this formula is designed for the scalp too (due to onion and HairDensyl ingredients).
- Comb through or let it absorb.
- No rinsing needed.
- Can also be used during the day to refresh volume and appearance.
The Three-Step HairDensyl Ritual
| Step | Product | What it does | Rinses off? |
|---|---|---|---|
| 1 | HairDensyl Shampoo | Cleanses, gives initial volume | Yes |
| 2 | HairDensyl Mask | Locks in volume, adds Crambe smoothness | Yes |
| 3 | HairDensyl Serum | Seals — all 5 actives stay on hair all day | No |
Which Bio2You Hair Serum to Choose?
| Silk Amino Acid Serum | HairDensyl Serum | |
|---|---|---|
| Key active | Silk amino acids | HairDensyl 5-ingredient complex |
| Additional | Nettle extract | Red onion quercetin |
| Focus | Smoothness and shine | Volume and vitality |
| Best for | Dull, rough hair | Fine, weakened hair |
| Scalp use | Not designed for | Can be applied to scalp |
Suitable For
- Fine, weakened and devitalised hair
- As the finishing step after HairDensyl shampoo and mask
- Daily use — also works as a standalone product
- Hair that lacks volume and looks flat
Free From
SLS · parabens · mineral oils · silicones
| 5 star | 50% | |
| 4 star | 50% | |
| 3 star | 0% | |
| 2 star | 0% | |
| 1 star | 0% |
| INCI | Aqua, Polyglyceryl-4 Caprate, Sweet Almond Oil Polyglycryl-4 Esters, Glycerin, Propylene Glycol, Hippophae Rhamnoides (Sea Buckthorn) Fruit Extract, Parfum (Fragrance), Solluble Collagen, Mel (Honey) Extract, Sodium PCA, Serine, Glycogen, Propylnene Glycol, Allium Cepa (Onion) Bulb Extract, Citric Acid, Polyquaternium-7, Sodium Benzoate, Potassium Sorbate, Benzyl Salicylate, Linalool, Citronellol, Limonene, Alpha-Isomethyl ionone, CI 15985. |
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