Lyclear treatment shampoo has been clinically proven to kill head lice and eggs. Use:Sufficient product and comb through to remove all eggs. Treats and washes skin friendly pleasant fragrance with osmolone , a hypertonic complex that kills head lice and eggs fast. Based on study questionnaire of 43 participants. Clinical studies have demonstrated up to 100% efficacy of lyclear treatment shampoo against lice and nits on an average european infestation level.