Quick verdict

Low risk

K18 HeatBounce Conditioning Heat Protectant acne and safety scorecard

K18 HeatBounce Conditioning Heat Protectant scores 92/100 overall and 80/100 for skin compatibility. Flagged ingredients are summarized before the full analysis.

Comedogenic risk

5/5

High acne-prone skin risk based on flagged ingredients.

Fungal acne concern

Review

2 high-concern ingredient signal needs review.

Pregnancy concern

Review

Check flagged ingredients with a clinician.

Flagged ingredients

2 high concern, 7 medium concern.

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K18 HeatBounce Conditioning Heat Protectant

VeganCruelty FreeParaben FreeSulfate FreeSilicone FreeMineral Oil FreepH BalancedBiodegradableMicroplastic FreeColor ProtectionDryness

K18 HeatBounce Conditioning Heat Protectant

Hair Care · Clinical

We put K18 HeatBounce Conditioning Heat Protectant through our full ingredient analysis.

Chapter I · The Score

The numbers don't lie.

After analyzing 15 ingredients across four dimensions, our algorithm returned a verdict that surprised us.

0/100

Overall

Highly Recommended

0/100

Skin Compatibility

0/100

Environmental

0/100

Naturalness

Chapter II · The Ingredients

Inside the formula.

We scored every ingredient individually. Some impressed us. Others raised serious questions.

sh-Oligopeptide-78 s-Fruit Fly Oligopeptide-1

This novel peptide is designed for skin and hair benefits, with a generally low risk of adverse reactions.

Low Concern

95/100

Laurdimonium Hydroxypropyl Hydrolyzed Barley Protein

A plant-based protein that reinforces the hair shaft and improves moisture retention significantly.

Low Concern

90/100

Behentrimonium Chloride

An effective detangler that may cause skin irritation in high concentrations and is toxic to aquatic life.

Moderate

66/100

Brassicatrimonium Chloride

A bio-based conditioning agent that reduces static and improves combability with better biodegradability than traditional quats.

Moderate

60/100

Isopropyl Alcohol

Acts as a solvent and astringent but can be drying and irritating to skin and hair, especially in higher concentrations.

Moderate

58/100

Isopropyl palmitate

An emollient and moisturizer, it has a moderate comedogenic rating which may be a concern for acne-prone skin.

Low Concern

70/100

Fragrance (Parfum)

A complex blend of aromatic substances that contains multiple known allergens like Citronellol and Limonene.

High Concern

30/100

Benzyl Salicylate

A fragrance ingredient and UV absorber, it is a known allergen and a suspected endocrine disruptor.

Moderate

50/100

Limonene

A common citrus-derived fragrance component that can become allergenic upon oxidation when exposed to air.

Moderate

52/100

Linalool

A floral-scented fragrance component that, like limonene, can oxidize and become allergenic.

Moderate

52/100

Citrus Aurantium Peel Oil

An essential oil used for fragrance, it can be phototoxic and a skin sensitizer for some individuals.

Moderate

40/100

Tetramethyl Acetyloctahydronaphthalenes

A synthetic musk fragrance ingredient, it is a potential sensitizer and has environmental concerns regarding persistence and bioaccumulation.

High Concern

33/100

Sodium Benzoate

A widely used preservative that is generally safe, though sensitive individuals might experience irritation.

Low Concern

78/100

Helianthus Annus (Sunflower) Seed Oil

A nourishing emollient rich in fatty acids and vitamin E, providing moisturizing and antioxidant benefits.

Low Concern

98/100

Rosmarinus Officinalis (Rosemary) Leaf Extract

An antioxidant and anti-inflammatory ingredient known for its soothing and potential hair growth-stimulating properties.

Low Concern

90/100

Full ingredient list

Water (Aqua) (Eau), Cellulose Gum, Isopentyldiol, Propanediol, Cetearyl Alcohol, Isopropyl palmitate, Sodium Benzoate, C13-15 alkane, sh-Oligopeptide-78 s-Fruit Fly Oligopeptide-1, (sh-Oligopeptide-78 s-Fruit Fly Oligopeptide-1) Peptides, Laurdimonium Hydroxypropyl Hydrolyzed Barley Protein, Helianthus Annus (Sunflower) Seed Oil, Oryza Sativa (Rice) Bran Extract, Helianthus Annuus (Sunflower) Extract, Rosmarinus Officinalis (Rosemary) Leaf Extract, Tocopherol, Behentrimonium Chloride, Brassicatrimonium Chloride, Gluconolactone, Arginine, Coco-Glucoside, Lactic Acid, Cellulose, C12-20 Alkyl Glucoside, Citric acid, Potassium Sorbate, Benzyl Alcohol, Isopropyl Alcohol, C14-22 Alcohols, Fragrance (Parfum), Amyl Salicylate, Benzyl Salicylate, Citronellol, Citrus Aurantium Peel Oil, Dimethyl Phenethyl Acetate, Geraniol, Geranyl Acetate, Isoeugenyl Acetate, Limonene, Linalool, Linalyl Acetate, Pinene, Tetramethyl Acetyloctahydronaphthalenes, Vanillin

Chapter III · The Deep Dive

Our expert's complete verdict.

The K18 HeatBounce Conditioning Heat Protectant is a modern hair care product designed to shield hair from thermal damage while simultaneously repairing its structure. It combines high-tech peptide science with plant-based emollients to provide protection without the use of traditional silicones.

🟢 Gesamtbewertung: Unbedenklich

This product features a very clean and sophisticated formulation that avoids many controversial ingredients like silicones, parabens, and microplastics. While it contains some potential fragrance allergens and conditioning agents that require caution for very sensitive skin, the overall safety profile for both hair and skin is excellent.

Einzelbewertung der wichtigsten Inhaltsstoffe

Inhaltsstoff	Bewertung	Funktion & Wirkung
Water (Aqua)	🟢	Solvent and base for the formulation.
sh-Oligopeptide-78	🟢	Patented K18Peptide™; mimics hair's natural structure to repair broken keratin chains.
C13-15 alkane	🟢	A plant-derived silicone alternative (Hemisqualane) that provides shine and heat protection.
Behentrimonium Chloride	🟡	Conditioning agent; reduces static and detangles. Hinweis: Can be irritating to skin in high concentrations; toxic to aquatic life.
Laurdimonium Hydroxypropyl Hydrolyzed Barley Protein	🟢	Plant-based protein that strengthens the hair shaft and improves moisture retention.
Gluconolactone	🟢	A polyhydroxy acid (PHA) that conditions the hair and acts as a mild antioxidant.
Arginine	🟢	An essential amino acid that supports hair strength and scalp health.
Isopentyldiol / Propanediol	🟢	Humectants that improve moisture levels and enhance ingredient penetration.
Helianthus Annuus Seed Oil	🟢	Sunflower seed oil; provides Vitamin E and essential fatty acids for smoothness.
Benzyl Alcohol	🟡	Preservative and solvent. Hinweis: A known fragrance allergen that may irritate very sensitive skin.
Lactic Acid / Citric Acid	🟢	Natural AHAs used to stabilize the pH level of the product to match the hair's natural acidity.
Fragrance (Parfum)	🟡	Provides scent. Hinweis: Contains multiple potential allergens like Citronellol and Limonene.

Umweltverträglichkeit

The formulation shows a conscious effort towards environmental responsibility by replacing persistent synthetics with biodegradable alternatives.

◈Biologische Abbaubarkeit: Most ingredients are readily biodegradable, though the conditioning "quats" (Behentrimonium Chloride) are more persistent in aquatic environments.
◈Kein Mikroplastik: The formula is free from solid or liquid synthetic polymers (microplastics), using Cellulose Gum as a thickener instead.
◈Keine Silikone/Mineralöle: This product is entirely silicone-free and mineral oil-free, utilizing C13-15 alkanes and plant oils for smoothing effects.
◈Palmöl-Thematik: Contains derivatives (e.g., Cetearyl Alcohol, Isopropyl palmitate) that may be palm-oil based; it is unclear if these are RSPO-certified.

Fazit und Empfehlung

Fazit: This is a high-performance, scientifically advanced heat protectant that prioritizes hair health over temporary cosmetic fixes. By avoiding silicones and microplastics, it offers a sustainable yet effective solution for heat styling.

Empfehlung:

◈Für wen geeignet? Ideal for all hair types, especially damaged, chemically treated, or fine hair that is easily weighed down by heavy silicones.
◈Besondere Hinweise: Due to the presence of multiple fragrance allergens (Limonene, Linalool, Geraniol), individuals with fragrance sensitivities or a history of contact dermatitis should perform a patch test on the skin first.
◈Kaufempfehlung: Highly recommended for users looking for a professional-grade, "clean beauty" heat protectant that provides actual reparative benefits.

⚠

High Concern - Flagged Ingredients

Fragrance (Parfum)

A complex blend of aromatic substances that contains multiple known allergens like Citronellol and Limonene.

Tetramethyl Acetyloctahydronaphthalenes

A synthetic musk fragrance ingredient, it is a potential sensitizer and has environmental concerns regarding persistence and bioaccumulation.

Chapter IV · The Verdict

✦

Highly Recommended

K18 HeatBounce Conditioning Heat Protectant earns a 92/100 from our algorithm. An excellent formulation with well-chosen, effective ingredients.

92Overall

80Skin Compatibility

85Environmental

75Naturalness

⊕Analyse your own product ← Back to all analyses

Frequently Asked Questions

Is K18 HeatBounce Conditioning Heat Protectant acne-safe or comedogenic?

K18 HeatBounce Conditioning Heat Protectant has an estimated acne and comedogenic risk of 5/5 based on 15 analyzed ingredients. A higher number suggests more caution for oily or acne-prone skin. This is informational, not medical advice.

How does K18 HeatBounce Conditioning Heat Protectant score for sensitive skin?

K18 HeatBounce Conditioning Heat Protectant scored 80/100 for skin compatibility and 92/100 overall - higher numbers mean lower overall concern. GlowLens flagged 2 higher-concern and 7 moderate-concern ingredient signals, so sensitive skin users are wise to patch-test first. This is informational, not medical advice.

Which ingredients in K18 HeatBounce Conditioning Heat Protectant are flagged?

GlowLens flagged 9 ingredients in this formula: 2 higher concern and 7 moderate concern. Review the ingredient scorecard on this page for the exact ingredient names and notes. This is informational, not medical advice.

What should I consider for K18 HeatBounce Conditioning Heat Protectant during pregnancy?

K18 HeatBounce Conditioning Heat Protectant contains higher-concern ingredient signals, so pregnancy or nursing use is best reviewed with a clinician. This is informational, not medical advice.

Quick verdict

Low risk