Acne production is the biggest problem associated with moisturizers. As a general rule, the heavier the cream the more likely it is to produce blackheads, whiteheads and other blemishes. People under the age of forty should look for ‘non-comedogenic’ creams.
Chemicals which commonly cause major acne include lanolin, mineral oil, paraffin and petrolatum. Other substances which can cause minor acne are butyl stearate, isopropyl isostearate, isopropyl myristate, isopropyl palmitate, myristyl lactate and myristyl myristate. The higher the percentage of these chemicals the more likely it is that blemishes will occur. They tend not to appear immediately but after long-term use.
Moisture creams may contain many irritating chemicals. The reputable American cosmetic companies have minimized this by thoroughly testing their products before they are released on the market.
Allergic reactions to moisturizers are not uncommon and are usually due to the masking perfumes, preservatives or sunscreens. Preservatives which frequently cause allergic reactions include Dowicill (quanterium 15), Kathon (methyl-chloroisothiozalone), Germall (imidazoyl urea), parabens, and other formaldehyde formations.
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