Every girl wants to look her best, and this fact isn't going to change overnight when we get preggers!

One of the beauty industry's best little boosts has to be hair dye. Masking greys and adding oomph, dye is many women's secret weapon. However, with many conventional hair products containing a cocktail of chemicals, including ammonia, pregnant women are often encouraged against dying their hair. Boo!

Some substances in dyes have been found to penetrate the scalp and in one study a small amount of the dye paraphenylenediamine was detected in the urine of the user only 30 minutes after it had been applied.

Unsurprisingly, colouring hair safely has become a hot topic amongst prospective mothers. Doctors advise you to err on the side of caution, and to wait until you are 12 weeks pregnant.

Although experts say modern hair dyes are much safer than their predecessors, with chemicals having very low toxicity, why risk it when there are natural alternatives out there? Chemical-free hair dyes are much safer to use during pregnancy, and modern formulations means they are just as good to use.

Daniel Field, the UK's leading organic and mineral hair care brand, is a good place to start. Expertly researched and salon-tested, Daniel Field products are formulated with fine ingredients, including high performance certified organic essential oils and non-genetically modified cereal oils and proteins.

The Natural Colours range is free from ammonia, hydrogen peroxide and preservatives, available in 19 shades and even claims to cover up greys.

Furthermore, for sun-kissed radiance, check out the new Daniel Field Natural Lights seaweed highlighting kit, which is formulated using natural seaweed extract, certified organic avocado essential oil for phyto-lightening, and is also odourless. Each pack comes with an essential oil conditioning treatment, containing a range of delectable ingredients including certified organic French lavender, aloe vera and honey to boost shine and radiance, as well as give hair luminous highlights.

Daniel Field Natural Colours and Natural Lights cost £7.99 each and are available from Sainsbury's, or you can order them online at www.danielfield.com. By Florence Buswell