Many people use a cleanser once or more times a day as part of their skin care regime together with a toner and moisturiser, insists cleanser definition. Cleanser advantages is in a better alternative to bar soap or another form of skin cleanser not specifically formulated for the face for the following reasons: Bar soap has a high pH (in the area of 9 to 10), and skin's natural pH is 5.5. Cleanser definition suggests, that soap can change the balance present in the skin to favor the overgrowth of some types of bacteria, exacerbating acne. Bar cleansers in general, soap or not, have thickeners that allow them to assume a bar shape can clog pores, leading (once again) to acne. Using bar soap on the face can remove natural oils from the skin that form a barrier against water loss. This causes the sebaceous glands to subsequently overproduce oil, which may again lead to clogged pores. Cleanser definition states, that in order to prevent drying out the skin, many cleansers incorporate moisturisers. Many users would recommend a cleanser that is gentle, non-irritating, thoroughly cleanses skin and allows the eyelids to be washed without hurting. Additionally, cleanser advantages in not splashing away without the use of a washcloth may be preferred as cloths can harbour bacteria. Different types of cleansers have been developed for people with different skin types, according to cleanser definition. Cleanser advantages are in their more vigorous action on oily skins to prevent breakouts, although they may overdry and irritate dry skin. Very dry skin may require a creamy lotion-type cleanser, as long as it doesn't make skin feel oily afterward. These are too gentle to be effective on oily (or even normal) skin, but dry skin requires much less cleansing power. Some cleansers may incorporate fragrance or essential oils. However, for some people these cleansers may irritate the skin and often provoking allergic responses. In order to use a cleanser properly, the face is first washed with tepid water, as hot and cold water do not open and close your pores, contrary to popular belief. Instead, they irritate the skin, potentially drying it or causing capillaries to become visible. Cleanser is rubbed on the face, ideally all the way to the hairline. This includes the throat and eyelids, especially for people who wear eye makeup (this may be the only step necessary to clean it off), and those are cleanser advantages. The face is again washed with tepid water, using hands to rinse away the cleanser. The face is patted (not rubbed) dry. Cleansers act, according cleanser definition, on the most external of the skin layers, the so-called corneal stratum (stratum corneum, the anatomical term in Latin), which is largely formed by squamous cells or keratinocytes (an epithelial layer which is quite dynamic, i.e., it is being constantly shed and replaced by the growth of new cells coming from the deeper layers of the skin, therefore its name). Most, if not all, agents present in cleansers are unable to penetrate these deeper layers such as dermis and hypodermis. As far as oily skin is concerned, the cleanser advantages to be looked for, would be the visible drying effect due to the action of the constituent ingredients among which are various detergents and also glycerin. Speaking about cleanser advantages it also needs to be kept in mind that all skin characteristics need to be taken into consideration.