Dermatologist questions regarding tanning?

My friend that I work with wanted me to post this .. she is very light skinned and wants to get tan she goes to the tanning salon and puts on tanning lotion but theres no tan she goes a lot and still no color we were both at the tanning salon and me i have no problem getting tan because im sicilian now... we were talking to the owner billy and he was telling us that his friend had the same problem and he went to the dermatologist and they gave his friend a cream to use and it boosted up his melanin do you think that if you go to a dermatoligst they will help you with that? What are some ways that you can boost your skin melanin she puts on tingle and thats to boost everything and she gets really red and it doesnt turn tan? whats up with that ... just need some pointers thanks !