Based on its formula, is this product safe for sensitive or chemically‑treated hair?

The formula contains ammonia, resorcinol and strong oxidising agents which can be harsh on already compromised hair or sensitive scalps; a patch test is recommended and those with damaged or chemically‑treated hair may experience increased dryness or irritation, so professional guidance is advised.

What role does resorcinol play in this hair‑dye kit?

Resorcinol acts as a primary intermediate that couples with the dye pigments during the oxidative process, helping to develop the intended shade and enhance color intensity, but it is also a known sensitizer that can cause allergic reactions in some users.

How often can the Wella Koleston Intense dye be applied and does it contain any controversial chemicals?

The product is designed for single use per coloring session; re‑application should be spaced at least four to six weeks to avoid over‑processing, and the formula includes controversial ingredients such as ammonia, hydrogen peroxide, resorcinol, and toluene‑2,5‑diamine sulfate, which are regulated but may be of concern for users seeking gentler alternatives.

Wella

Wella Koleston Intense Saç Boyası 7/17 Buzlu Çikolata

Hair

Product Insights

The Wella Koleston Intense Saç Boyası 7/17 “Buzlu Çikolata” is a permanent hair‑color kit that delivers a cool, chocolate‑tone shade through a formulation that combines a water‑based carrier, conditioning agents such as cetearyl alcohol and glyceryl stearate SE, and a developer system containing ammonia, hydrogen peroxide and a blend of aromatic primary intermediates. The product provides reliable, long‑lasting coverage while also incorporating moisturising ingredients, but it also contains several potential irritants and sensitizers, including ammonia, resorcinol, toluene‑2,5‑diamine sulfate, fragrance (parfum), and common allergens like linalool and hexyl cinnamal, which may provoke scalp reactions in sensitive users. Overall, the kit is suited for professional or experienced at‑home users seeking vivid, permanent color, yet individuals with sensitive scalps or allergy concerns should perform a patch test and consider the irritant profile before application.

Comparative Analysis

Positioned as a professional‑grade, permanent hair‑color kit, Wella Koleston Intense targets consumers who want an intense, cool‑chocolate shade and offers a complete developer‑plus‑color system that stands out for its high‑lift performance and conditioning blend compared with typical over‑the‑counter dye brands.

Ingredients

Aqua, Cetearyl Alcohol, Glyceryl Stearate SE, Sodium Laureth Sulfate, Ammonia, Glycol Distearate, Lanolin Alcohol, Sodium Lauryl Sulfate, Sodium Sulfate, Sodium Cocoyl Isethionate, Sodium Sulfite, Ascorbic Acid, Toluene-2,5-Diamine Sulfate, Parfum, Resorcinol, Disodium EDTA, 2-Amino-4-Hydroxyethylaminoanisole Sulfate, m-Aminophenol, Citric Acid, Tocopherol, Hydrogen Peroxide, Salicylic Acid, Disodium Phosphate, Phosphoric Acid, Disodium Pyrophosphate, Sodium Stannate, Etidronic Acid, Bis-Hydroxy/Methoxy Amodimethicone, Stearyl Alcohol, Cetyl Alcohol, Stearamidopropyl Dimethylamine, Glutamic Acid, Benzyl Alcohol, Benzyl Benzoate, Histidine, EDTA, Argania Spinosa Kernel Oil, Sodium Chloride, Hexyl Cinnamal, Linalool, Magnesium Nitrate, Trimethylsiloxysilicate, Methylchloroisothiazolinone, Magnesium Chloride, Methylisothiazolinone

84%

35%

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