K18 HeatBounce Conditioning Heat Protectant 236 ml, leave-in

Product description

K18 HeatBounce™ Conditioning Heat Protectant is the leave-in K18 heat protectant that also detangles and softens, here in the 236 ml bottle. It goes on towel-dried hair before blow-drying and on dry hair before hot styling tools. K18 states that it protects against heat up to 232 °C. It also comes in 118 ml.

HeatBounce at a glance

What it is: a leave-in heat protectant that detangles and softens
Heat: K18 states that it protects against heat up to 232 °C
Amount: start with 3 sprays, add more if your hair type needs it
When: towel-dried hair before the dryer, dry hair before the iron or tongs
Hair: all hair types and textures, extensions included
Format: 236 ml

What the ingredient list shows

Water opens the published list of 43 entries, followed by Cellulose Gum, Isopentyldiol, Propanediol and Cetearyl Alcohol. The peptide entry sits ninth, a protein derived from barley tenth. K18 credits its resilicore™ technology for the heat shielding. In the brand's words, the size and molecular make-up of resilicore™ allow it … to penetrate … into the hair cortex … and to form a protective shield there. That is K18's description, quoted with its cuts marked.

Key ingredients

From the ingredient list

Isopentyldiol: entry 3
Propanediol: entry 4
Cetearyl Alcohol: entry 5
sh-Oligopeptide-78 s-Fruit Fly Oligopeptide-1: entry 9, the peptide entry
Laurdimonium Hydroxypropyl Hydrolyzed Barley Protein: entry 10, derived from barley
Helianthus Annuus (sunflower) seed oil: entry 11
Tocopherol: entry 15
Behentrimonium Chloride: entry 16

What to expect

The result depends on how it goes on. Section the hair, spray, then brush through so every section is covered. Start small and build up: longer, denser hair usually needs more. Apply it once after towel-drying, ahead of the dryer, then again once the hair is dry, before you pick up the iron or tongs.

Who it is for

Stylists who blow-dry and iron every day and want one leave-in step before the heat.
All hair types and textures, as K18 describes it, and extensions as well.
Clients who also want a leave-in conditioner on days without heat styling.

Who it is not for

Anyone sensitive to the fragrance allergens on the list. They are Amyl Salicylate, Benzyl Alcohol, Benzyl Salicylate, Citronellol, Citrus Aurantium Peel Oil, Dimethyl Phenethyl Acetate, Geraniol, Geranyl Acetate, Isoeugenyl Acetate, Limonene, Linalool, Linalyl Acetate, Pinene, Tetramethyl Acetyloctahydronaphthalenes and Vanillin.
Anyone who avoids barley: the list carries a barley-derived protein, and barley is a source of gluten.

How to use

The printed directions, translated from Dutch, in full.

Method A: the printed directions

Apply to sectioned hair and brush through for an even distribution.
Less is more: start with 3 sprays and add more if needed, depending on your hair type.
Use on towel-dried hair before blow-drying and on dry hair before using hot styling tools.

Where it fits in the K18 range

After the wash, K18's own routine pairs it with the K18 Leave-In Molecular Repair Hair Mask or the K18 DAMAGE SHIELD Protective Conditioner. The K18 Molecular Repair Hair Oil finishes. Its styling siblings are AstroLift™ and AirWash™. The K18 Styling category and the K18 brand page show the range.

Complete and maintain the system

K18 Leave-In Molecular Repair Hair Mask 150 ml: after the wash, before the heat protectant
K18 Molecular Repair Hair Oil 30 ml: the finisher of the routine

Frequently asked questions

What heat limit does K18 give?

K18 states that it protects against heat up to 232 °C. Treat the figure as the brand's upper limit and keep your tools at or below it.

Can I use it on extensions?

Yes. It is made for all hair types and textures and is also suitable for extensions.

Wet or dry hair?

Both, at two moments. Use it on towel-dried hair before blow-drying, then on dry hair before hot styling tools.

Is it suitable if I avoid barley or gluten?

Check with care. The tenth entry on its list is derived from barley, and barley is a source of gluten.

Which fragrance allergens does it contain?

Fifteen are named on its list. They are Amyl Salicylate, Benzyl Alcohol, Benzyl Salicylate, Citronellol, Citrus Aurantium Peel Oil, Dimethyl Phenethyl Acetate, Geraniol, Geranyl Acetate, Isoeugenyl Acetate, Limonene, Linalool, Linalyl Acetate, Pinene, Tetramethyl Acetyloctahydronaphthalenes and Vanillin.

Can I use it without heat?

Yes. K18 says it can be used as a leave-in conditioner, also on days without a dryer or iron.

Where does it go in a K18 routine?

After shampooing comes the K18 mask with its 4-minute wait, or the DAMAGE SHIELD conditioner. Then HeatBounce before the dryer, together with AstroLift™, and again before hot tools. The K18 oil finishes; AirWash™ refreshes the hair between washes.

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Precautions for use

Care
Applies to: shampoo, conditioner, masks, treatments, leave-in, oils, serums, non-aerosol heat protectants and scalp care.

For external use only, on hair and scalp, as directed.
Avoid contact with eyes. Rinse immediately with water if contact occurs.
Do not use on an irritated or damaged scalp, or in case of a known allergy to one of the ingredients.
Stop and rinse out if redness, itching or irritation occurs.
Salon sizes marked for professional use are applied by a hairdresser only.
Keep out of reach of children. Do not swallow.
Store closed, cool and dry, away from sunlight. After opening, use within the period shown on the pack.

Always read the label and the instructions of the product itself.