Selsun Blue is an over-the-counter brand of dandruff shampoo now owned by Sanofi. Made by Abbott Laboratories, the brand was later bought by Chattem in 2002. Chattem was acquired by Sanofi in 2010, although in some markets, it is sold by Rohto Pharmaceutical instead. Selsun Blue has been marketed as a more effective alternative to brand leader Head & Shoulders due to its superior performance in randomized trials.
In 2011, the Selsun Blue brand consisted of 15 products spread across two brand segments, Naturals and Base. The Naturals line of products contains the active ingredient salicylic acid in addition to 8 moisturizers & botanicals plus vitamins B5 & E. Salicylic acid is a keratolytic agent that assists with cell shedding or flaking. The base brand consists of six types including Medicated with menthol, 2-in-1, Normal to Oily, Moisturizing, Itchy Dry Scalp, and Deep Cleansing with micro beads. The first four types contain the active ingredient selenium sulfide which has been shown to have anti-fungal properties. More specifically, selenium sulfide, an anti-infective agent, relieves itching and flaking of the scalp and removes the dry, scaly particles commonly referred to as dandruff or seborrhea. Selenium sulfide is also used to treat tinea versicolor, a fungal infection of the skin.
Deep Cleansing was launched by Chattem in January 2011. In addition to the active ingredient salicylic acid, the product contains scrubbing micro beads.
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