Wiki Cosmetics

The Period After Opening (PAO) is a crucial label on cosmetic products, signified by an open jar icon with a numerical value (e.g., '12M'), denoting the product's usable lifespan after its initial unsealing. This metric is established through extensive stability and microbiological testing to ensure the product remains safe and effective against degradation and microbial contamination exacerbated by exposure to air, light, and handling.Manufacturers determine the PAO by assessing factors such as...

Aromatherapy harnesses the therapeutic properties of essential oils derived from plants. These volatile compounds interact with the olfactory system, sending signals to the brain's limbic system, influencing emotions, mood, and physiological functions. Key mechanisms involve neurochemical modulation and potential anti-inflammatory or antimicrobial effects.The practice utilizes various application methods, including diffusion for inhalation and diluted topical application for massage or skincare....

The term 'hypoallergenic' denotes a product or material designed to reduce the likelihood of causing an allergic reaction. This classification is not absolute but rather a relative descriptor indicating that the item has undergone specific formulation or manufacturing processes intended to minimize the presence of known common allergens. For instance, in cosmetics and personal care products, this often involves excluding common irritants such as fragrances, certain preservatives (like parabens o...

Sterilization is the complete elimination or inactivation of all forms of microbial life, including bacteria, viruses, fungi, and spores, from a product, device, or environment. This process transcends mere disinfection, which typically reduces the number of viable microorganisms to a level deemed safe by public health standards but does not necessarily eliminate all forms. Sterilization achieves an absolute reduction in microbial contamination, rendering the treated item incapable of causing in...