Lice may be detected by the nits attached to the hairs. Also, since the hair continues to grow after the eggs hatch the old nits will tend to be higher on the hair shaft. It is important to distinguish louse nits from scalp scales and this may require a magnifying glass. Consult a physician. Every member of the family should be treated.
Baby oil is also effective.
Repeat in 2 weeks if needed. Do not get in eyes. Practice proper personal hygiene. Avoid using other individuals' combs, hats, towels, or hairbrushes. Bedding and clothing should be changed and washed frequently.