The Pink Line has been studied to regulate sebum production from sebaceous glands, diminishing an excessive secretion. The products of the Pink Line are rich in zinc salts and Spiraea Ulmaria extracts, which can reduce the activity of some enzymes responsible for the sebum production.

The tannins extracted from the Spiraea Ulmaria have also a high astringent activity which makes the pores of the scalp contract, thus preventing the bacteria to enter the glandular and the hair follicle duct. The active sulfur re-establishes the physiological activity of the glandular cells and reduces the possible bacteria colonization, which grows considerably in case of hyperhidrosis and seborrhea.