Fake tan users have been warned harsh chemicals in the lotions could cause serious health risks.
A cocktail of ingredients in the creams include poisonous substances like cancer-causing formaldehyde and nitrosamines.
While pregnant women have also been warned the lotions cause a higher risk of birth defects.
Experts have also said the creams could also cause fertility problems.
Some which will be worrying for millions of women who lather themselves with the creams on a weekly basis.
Ingredients such as MSG and tartrazine are also found in the lotions and can cause concern for allergy sufferers if the product is used on a long-term basis.
Other chemicals found in the creams include Sulphur Dioxide and Benzophenone-3, a gender-bending chemical which mimics the effect of oestrogen, among others.
Elizabeth Salter-Green of the UK charity Chem Trust told the Sun on Sunday that harsh chemicals in the creams are toxic to reproductive systems and could harm a foetus.
Jacqueline McGlad, executive director of the European Environment Agency added: ‘It would be prudent to take a precautionary approach to many of these chemicals until their effects are more fully understood.’
She added that increased use in the product could be linked to the significant rise in cancers, diabetes and falling fertility levels.
The UK’s fake tan industry is thought to be worth £100 million a year and it is one of the fastest-growing products in the cosmetic industry.
It is thought a third of women and one in ten men use the product regularly and is favoured by many celebrities including stars like Katie Price and Chloe Sims from TOWIE.
Majority of the products use dihydroxyacetone (DHA) which reacts with amino acids in the skin, causing it to turn darker.
Alyson Hogg of Vita Liberata, the only self-tan on the market which is free from harmful chemicals, said that many cosmetic companies used the potentially harmful ingredients because they were cheap and easy.
Sims, who admits she has been using ‘lashings of it since she was 16′ said she was astonished that experts had taken so long to warn people about the risks.
‘What next? Everybody in Essex uses fake tan as who wants to be pale? People wouldn’t recognise anyone without their fake tan,’ she said.