Overview Full Marks Solution A new development in head lice treatment that contains no traditional pesticides. Full Marks Solution is clinically proven to kill head lice in a 10 minute treatment time and has no nasty smell and may be suitable for eczema and asthma sufferers-->. Clinically proven to kill head lice Quick, easy 10 minute treatment time Odourless Contains no traditional pesticides Full Marks Removal Comb included in every pack Directions Apply to dry hair, leave for 10 minutes. Comb through hair with comb provided to remove the remains of lice and eggs. Finally wash out using non- conditioning shampoo. It’s that easy. Remember to retreat 7 days later. Can be used on adults, elderly and children over 2 years old. With many non-traditional insecticides including Full Marks Solution a second treatment, seven days after the first is required. This is to kill any newly-hatched lice which may have been missed in the initial treatment