It is usually not recommended to put sun-cream on babies younger than 6 months, because of worries about causing vitamin D deficiency (which may or may not be unfounded). A better policy is to keep young babies out of direct sunlight, ensuring clothing does not allow sunlight through, wearing a hat, but avoid using creams.

Exposure to sunlight increases the risk of skin cancer. It is recommended by the Department of Health that a minimum factor of SPF15 is used. However, above SPF20 the concentrations of chemicals can cause skin irritation (as well as irritation when trying to rub the damn stuff in). These may include octyl methoxycinnamate (OMC), benzophenone, titanium dioxide and talc. All of these have some indications of causing health problems, although these are not definitive.

It is possible to buy vegan and vegetarian sunscreens – try Honesty. Green People sell organic sunscreens, while other recommended ethical suppliers are Soltan and Weleda.

Remember to recycle your empty tubes, most of which are made from PE or HDPE.