What are Creams ?

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Creams are semi-stable emulsions of oil and water. They are divided into  types: oil-in-water (O/W) lotions that are composed of small droplets of oil dispersed in a continuous water segment, and water-in-oil (W/O) creams which can be composed of small droplets of water dispersed in a continuous oily phase. Oil-in-water creams are greater relaxed and cosmetically perfect as they're much less greasy and extra easily washed off using water. Water-in-oil creams are more hard to address but many drugs which might be incorporated into creams are hydrophobic and can be launched extra readily from a water-in-oil cream than an oil-in-water cream. Water-in-oil lotions also are greater moisturizing as they offer an oily barrier which reduces water loss from the stratum corneum, the outermost layer of the pores and skin.