Hairmetry
Light Leave-in Mist 150 ml
Weightless slip and frizz control for fine and low-porosity hair
€18.95
Delivery times
- the Netherlands: 1 working day
- Belgium: 1-2 working days
- Luxembourg, Germany, Austria and Denmark: 2-3 working days
- France: 2-4 working days
- Elsewhere in the EU: 3-10 working days
- Switzerland: 3-4 working days
- Iceland: 3-5 working days
- Liechtenstein: 4-5 working days
- the United Kingdom: 5-8 working days
- Norway: 6-8 working days
- the United States and Canada: 6-9 working days
- New Zealand: 7-12 working days
- Australia: 8-12 working days
Free shipping from €49. Free gift from €59.
Who it's for
Made for
- Straight hair
- Wavy hair
- Curly hair
- Coily hair
- Oily scalp
- Balanced scalp
- Dry scalp
- Flaky or itchy scalp
- Tangles
- Frizz
- Dryness
- Dullness
- Breakage
Why pick it
- 6 key ingredients, each linked to its study
- No fragrance, essential oils, MI/MCI or formaldehyde releasers
- How often
- Every wash
- You notice it
- From the first use
Why it works
How to use it
- 1On damp hair, spray a few times on mid-lengths and ends.
- 2Comb through. Keep it off the roots.
Us vs others
| Others | ||
|---|---|---|
| Key ingredients with a linked study | 6 of 6 | Varies |
| Time to first change | From the first use | Varies |
| Full ingredient list shown | Yes | Varies |
| Fragrance, essential oils, MI/MCI | None added | Varies |
| Drying alcohol | None added | Varies |
Others: 10 brand pages we checked, October 2026.
What we leave out, and why
- FragranceA leading cause of contact allergy
- Essential oilsNatural, but a known skin allergen
- MI/MCIPreservatives behind an allergy rise in Europe
- Formaldehyde releasersSlowly release formaldehyde, a skin allergen
- Zinc pyrithioneBanned in EU cosmetics since 2022
- Drying alcoholCan dry out a sensitive scalp
- Coal tarIrritating, and a non-tar shampoo did as well
- MDBGNBanned in the EU after allergies kept rising
Full ingredient list
Aqua, Panthenol, Phenoxyethanol, Hydrolyzed Keratin, Behentrimonium Chloride, Amodimethicone, Trideceth-12, Cetrimonium Chloride, Guar Hydroxypropyltrimonium Chloride, Ethylhexylglycerin, Citric Acid
Frequently asked
How many sprays do I need?
A few sprays on damp mid-lengths and ends. Start with two or three on fine hair and add only if it still tangles.
Will it weigh down fine hair?
It is a thin mist with a small amount of conditioner, made for fine and low-density hair. Keep it off the roots.
Does it protect from heat?
No. It is a daily leave-in. Before a blow-dryer or hot tool, use the Leave-in Heat Shield as well.
Can I use it every wash?
Yes. It is made for every wash, on damp hair.
Mist or Rich Leave-in Cream: which one?
The mist for fine, straight, wavy and low-porosity hair. The cream for curly, coily and high-porosity hair that needs more slip.
Light Leave-in Mist 150 ml
Pairs well with
Key studies behind this product
EU sets caps on conditioning agents in hair products
The EU caps behentrimonium chloride at 5.0% in rinse-off and 3.0% in leave-on hair products, and cetrimonium chloride at 2.5% rinse-off and 1.0% leave-on. Combined amounts must stay under the cap because mixtures can irritate.
Commission Regulation (EU) No 866/2014 amending Annexes III, V and VI to Regulation (EC) No 1223/2009 (cosmetic products)
Read the study ↗Silicones cut friction and add shine and heat protection
A review found silicones reduce friction, prevent moisture loss and add shine and heat protection. Water-insoluble types can build up, and newer water-dispersible forms exist.
Carvalho RM, Melo DF, Kelati A, Tosti A. With or without silicones? A comprehensive review of their role in hair care. Skin Appendage Disord. 2025
Read the study ↗Safety panel judged dimethicone and amino-silicones safe in cosmetics
The Cosmetic Ingredient Review panel judged dimethicone and the amino-silicones safe as used in cosmetics, with minimal absorption.
Nair B, Cosmetic Ingredient Review Expert Panel. Final report on the safety assessment of stearoxy dimethicone, dimethicone, methicone, amino bispropyl dimethicone, aminopropyl dimethicone, amodimethicone, and related silicones. Int J Toxicol. 2003
Read the study ↗Show 10 more studies
In lab tests, behentrimonium chloride eased wet combing best
Longer-chain behentrimonium chloride cut wet combing force and deposited best of the conditioning agents tested. None reversed oxidative damage.
Tham HP et al. Electrokinetic analysis reveals common conditioner ingredient interactions with human hair. Int J Cosmet Sci. 2026
Read the study ↗Products stick to virgin and bleached hair in different ways
In lab force-microscopy tests, hydrophobic interaction drove deposition on virgin hair, while electrostatic interaction drove it on bleached hair.
Labarre L et al. Hair surface interactions against different chemical functional groups as a function of environment and hair condition. Int J Cosmet Sci. 2023
Read the study ↗Silicone type and amount change friction on the hair surface
In lab tests on human hair, silicone type, deposition level and the cationic surfactant used all changed nanoscale friction and adhesion of the hair.
La Torre C, Bhushan B. Nanotribological effects of silicone type, silicone deposition level, and surfactant type on human hair using atomic force microscopy. J Cosmet Sci. 2006
Read the study ↗Guar polymer put more conditioning oil and silicone onto hair
In lab tests on virgin hair, guar hydroxypropyltrimonium chloride delivered more natural conditioning oil and dimethicone onto hair than the other polymers tested. The work also measured the resulting comb energy and friction.
Erazo-Majewicz P et al. Linking enhanced deposition agent functionality with aesthetic performance. J Cosmet Sci. 2011
Read the study ↗Polymer size decided how much conditioning polymer stuck to hair
In lab tests on hair tresses, the molecular weight of a cationic polymer controlled how much deposited on hair, far more than its charge or the number of washes.
Gruber JV et al. Examining cationic polysaccharide deposition onto keratin surfaces through biopolymer fluorescent labeling. J Cosmet Sci. 2001
Read the study ↗Cationic guar sticks to hair differently by hair type in lab tests
In lab tests on hair of several ancestries, guar molecular weight set the thickness of the layer on hair and charge density set surface charge. Anionic surfactant uptake was quicker on African, grey European and mixed hair than on Chinese, dark European and Indian hair.
McMullen RL et al. Investigation of the interactions of cationic guar with human hair by electrokinetic analysis. Int J Cosmet Sci. 2021
Read the study ↗In lab tests, panthenol entered hair and made fibres stronger
In human hair tested in the lab, labelled panthenol penetrated into the protein-rich core and raised break stress and stiffness, probably through hydrogen bonding.
Marsh JM et al. Strengthening benefits of panthenol for hair: mechanistic evidence from advanced spectroscopic techniques. Int J Cosmet Sci. 2026
Read the study ↗Expert panel judged panthenol and pantothenic acid safe in cosmetics
The Cosmetic Ingredient Review panel judged panthenol and pantothenic acid safe as used in cosmetics, where they act as hair conditioners and humectants.
Scott LN, Fiume M, Bergfeld WF et al. Safety assessment of panthenol, pantothenic acid, and derivatives as used in cosmetics. Int J Toxicol. 2022
Read the study ↗Mid-size keratin peptides entered relaxed hair and made it stronger
In lab tests on chemically relaxed curly hair, small and mid-size keratin peptides entered the cortex while the largest stayed on the surface. The mid-size peptide raised break stress 18.6% at 20% humidity and 40.0% at 80% humidity.
Malinauskyte E et al. Penetration of different molecular weight hydrolysed keratins into hair fibres and their effects on the physical properties of textured hair. Int J Cosmet Sci. 2021
Read the study ↗Keratin-derived ingredients were judged safe as used in cosmetics
The Cosmetic Ingredient Review panel judged 8 keratin-derived ingredients safe as used in cosmetics. They are used mainly as skin and hair conditioning agents.
Burnett CL et al. Safety Assessment of Keratin and Keratin-Derived Ingredients as Used in Cosmetics. Int J Toxicol. 2021
Read the study ↗