Preservatives in cosmetics. Are they really harmful?

The manufacturers of cosmetic products are constantly trying to enrich their products with new ingredients. But are all these substances really safe? Check the composition of your cosmetic products and see if the ingredients they contain are actually harmless.

Ingredients considered as harmful

  1. SLS (Sodium Lauryl Sulfate) is a low-cost synthetic detergent that causes foaming lather that we see in hair shampoos or shower gels. This ingredient can irritate and dry the skin because it removes the protective lipid layer of the epidermis. Long-term use of SLS may lead to pruritus, acne or eczema. What’s more, it disturbs the production of sebum and sweat, and when it penetrates into the body, it accumulates in the tissues. SLS also damages the hair follicles which can result in hair loss.
  2. SLES (Sodium Laureth Sulfate) is a substance that is created during the chemical processing of SLS. It is milder to the skin than SLS but has a rather irritating and drying effect. In addition, these two components can lead to atopic dermatitis.
  3. Paraffin is extracted from petroleum. It smoothes the skin and softens it. Paraffin leaves a thick layer that clogs the pores. The substance lacks nutrients and leaves the skin unprotected from solar radiation.
  4. Parabens (methylparaben, ethylparaben, butylparaben) are preservatives added to cosmetics. Their task is to extend the shelf life of a given product and prevent the multiplication of bacteria inside the package. Parabens used in excessive amounts can cause skin sensitization and irritation.
  5. Lanolin is fat obtained from sheep’s wool. It is often added to creams and hair products. Lanolin can sensitize, clog pores and cause irritation.
  6. Formaldehyde is mostly found in nail polishes. Its vapours are irritating and can cause an itchy rash and inflamed areas. This substance also makes nails brittle. Formaldehyde belongs to carcinogenic substances.
  7. Glycols are used in the cosmetics industry as solvents, emulsifiers and viscosity enhancers. These substances weaken the hydro-lipid barrier and have a carcinogenic effect.
  8. Silicones are colourless oils used in hair products, foundations and foundation primers. They level out imperfections, soften hair and create a protective layer on the skin. They can clog skin pores and lead to the formation of blackheads and pimples.

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