For Diagnosing head lice at home You will need 2 common items: Bright light. Fine-tooth comb or lice comb. What to do : You can find head lice by following these 2 steps: Wet the hair as it prevents the lice from scurrying away. Separate hair into sections. Beginning at the scalp, slowly comb outward through the hair section by section. What to look for : adult lice and their eggs (called nits). You’re more likely to see nits than adults because nits are firmly attached to th