3. Propylene glycol: a petroleum based material that is used to soften cosmetic products due to its slick consistency. It is a cheap way to make skin care products more easily applicable to the skin.Though studies are still debating on its side-effects, studies have shown that it can cause damage to the central nervous system, liver and heart.
4. Phthalates: Phthalates are used in cosmetics, synthetic fragrances, plastics, body care products and medical goods. They help to dissolve other ingredients and to create a better consistency.
The problem with phthalates is that they have been linked to a variety of health issues. High phthalate blood and urine levels in women of child bearing age have been linked to a higher risk of birth defects. This suggests that phthalates may disrupt hormone receptors as well as increase the likelihood of cell mutation.
5. Triclosan: It is utilized as the odor killing part of antiperspirants for its anti-bacterial properties. It is also commonly used in antibacterial soaps, hand wipes and gels.
Triclosan is actually classified as a pesticide by the FDA. It is also classified as a probable carcinogen by the Environmental Protection Agency. This classification has prompted some companies to remove it from their products. However, it still can be found as an ingredient in some formulas.