White Ichthammol, the effective agent of the IchtyoCare preparations by Dr. Müller Pharma, is a light form of sulphonated slate oil. While ammonia is used for the neutralization of common dark ichthammol, and the final product contains a not negligible amount of ammonia, white ichthammol is neutralized by sodium ions which aren’t so alien to our bodies and do not contain any free base that can irritate the skin.
The advantage, then, is better solubility in water, a higher degree of purity, lighter colour and better dermatological tolerance. It is also more active against fungi and yeasts which are one of the causes of dandruff.

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IchthyoCare soap

The soap with 2,5% white ichtamol is a product for cleansing of the skin associated with itchy skin bearings at various dermatological disorders.