What: Mostly found in deodorants, shampoo, sunscreen, skin care, body care and baby care products. The compounds in fragrance are carcinogenic or toxic and can even have as much as 4,000 separate ingredients, mostly synthetic. Health effects: Headaches, dizziness, rashes, skin discoloration, violent coughing and vomiting, allergic skin reaction, and can even affect the central nervous system that leads to depression, hyperactivity, irritability and other behavioural changes. The alternative: Go for unscented products. If you can't do without “fragrance”, add a natural essential oil.