When I first heard about Kairos' anti-acne hair care treatments, launched about a month ago, I was somewhat mystified. Who has acne on their head? Kairos claims that this this is the first shampoo and conditioner aimed at acne sufferers and its rationale does make sense - although I'm not really sure that I buy it. The idea is that your shampoo could contain ingredients that could exacerbate acne and if you don't watch out your greasy bangs will get into your sebaceous glands and make them produce even more oil that causes breakouts. Hmm, maybe.

The solution is to add a o.5% concentration of one of the most common anti-acne ingredients, salicylic acid. I'm not sure if this is supposed to dry out the hair and remove excess grease or ensure that your freshly washed bangs deposit an ingredient that acne doesn't like.

We are told by Kairos that "the carefully chosen cocktail of natural botanicals clarifies and balances hair for salon-quality results without acne-irritating aftermath for your complexion". That is certainly true of ingredients in the shampoo ($24) such as tea tree oil, apple amino acids and sapindus mukurossi, which has antibacterial properties and is frequently used in adult acne creams. I also like the addition of copper PCA, which can assist hair growth by strengthening follicles.

I was, however, surprised to see a number of coconut derived products. Coconut oil is notoriously comedogenic (clogs pores and causes breakouts and cocamidopropyl betaine, in particular, is known to be a dermal irritant. Methylchloroisothiazolinone and methylisothiazolinone are also irritants. Saving the best to last, you and your acne will really like benzalkonium chloride. Solutions of 10% or more are toxic to humans, causing irritation to the skin and mucosa, and death if taken internally.  Very low concentrations can damage the eyes, according to one study.

Active Ingredient
Salicylic Acid 0.5%

Inactive Ingredients
Water, Sodium Coco-Sulfate, Cocamidopropyl Betaine, Cocamide MEA, Polysorbate 20, Sodium Cocoyl Apple Amino Acids, Lactic Acid, Copper PCA, Melaleuca Alternifolia (Tea Tree) Leaf Oil, Lavandula Angustifolia (Lavender) Oil, Prunus Amygdalus Dulcis (Sweet Almond) Oil, Anthemis Nobilis Flower Extract, Sapindus Mukurossi Fruit Extract, Alcohol, Propylene Glycol, Iris Florentina Root Extract, Zinc Sulfate, Retinyl Palmitate, Polyquaternium-44, Methylchloroisothiazolinone, methylisothiazolinone, Benzalkonium Chloride, Fragrance.