Baby shampoo /ˈbā-bē/ /ʃæmˈpuː/ is a hair care product that is used for the removal of oils, dirt, skin particles, dandruff, environmental pollutants and other contaminant particles that gradually build up in hair; specially formulated for use on infants and young children by means of substituting chemicals which are purportedly less irritating to the eyes than those commonly found in regular shampoo. Baby shampoo /ˈbā-bē/ /ʃæmˈpuː/ is a hair care product that is used for the removal of oils, dirt, skin particles, dandruff, environmental pollutants and other contaminant particles that gradually build up in hair; specially formulated for use on infants and young children by means of substituting chemicals which are purportedly less irritating to the eyes than those commonly found in regular shampoo. Scalp skin of babies is characterized by subdued sebaceous gland production, due to hormonal levels. The sebaceous gland secretes sebum, a waxy ester, which maintains the acid mantle of the scalp and provides a coating that keeps skin supple and moist. The sebum builds overly, between every 2–3 days for the average adult. Those with delicate skin such as children may experience a longer interval. Sebum also imparts a protective coating to hair strands. For babies, the sebaceous gland production is not at peak, thus daily washing is not typically needed. Most contain sodium trideceth sulfate, which is formulated to act as a low-irritation cleansing agent. Alternatively, baby shampoo may be formulated using other classes of surfactants, most notably non-ionics which are much milder than any charged anionics used. Shampoo for infants and young children is formulated so that it is less irritating and usually less prone to produce a stinging or burning sensation if it were to get into the eyes. For example, Johnson & Johnson advertises Johnson's baby Shampoo under the premise of 'No More Tears'. This is accomplished by one or more of the following formulation strategies: