Y56: Topical agents primarily affecting skin and mucous membrane and ophthalmological, otorhinolaryngological and dental drugs

Y56.4: Keratolytics, keratoplastics and other hair treatment drugs and preparations

Keratolytics, keratoplastics and other hair treatment drugs and preparations are substances that are often used in the management and treatment of various skin and hair conditions. Keratolytics work by causing the outer layer of the skin to loosen and shed, thereby aiding in the removal of scales, while keratoplastics promote the normalization of the skin's growth and development. These can be used to manage conditions like psoriasis, eczema, or severe dandruff. Sometimes, people may have adverse reactions to these treatments, which can manifest as redness, scaling, dryness, or itching where the product was applied. In severe cases, the reaction can cause blistering or severe skin irritation. These reactions can often be mistaken for a worsening of the skin or hair condition, but they are typically a sign that the treatment may need to be adjusted or changed.