I did 2 guinea pigs using my new Nouvatan last night (mother and daughter) I did mother with 8% and daughter with 16% (as she is in dance competitions and needs to be really dark - like unnaturally dark like the body builders). But, I spoke to the mam this morning and she said that the daughter is the same colour as her. Surely the 16% should have made her black?! I have booster drops that I will try on her when this tan has faded but I want it to be cost effective. I spoke to Dawn before I ordered the booster drops and she said that 5 drops would take it up 1%, so I was thinking of adding maybe 10 drops to 100ml to take it up to 18%, or do you think I will only need 5? Mother is going to mail me some pics later. So I will have a look. Mother did say that she couldnt stop looking at herself lol and daughter has yet to shower, which leads me to belive the daughter will be lighter again once showered. I am only charging £10 for the tans so still want it to be cost effective whilst getting the right look. I know Elisa, you have used 16% on Destiny but my model didnt get anywhere near the results you got. I dont want to charge anymore than £10 for the tans for the kids as I think it is enough to pay. Mother has said it would still be ok, she could just add a bit of instant tan on the day (but I really wanted to avoid this). any suggestions? I did think of double dipping her but then that would double the price lol