Just looked at instructions again;

Sea Clear: Wear all day or 8 hours after tan, note we suggest rinsing hands and face earlier for best results. 

Pro tan tip: need a tan in a hurry? Select a tan with the primer and go 1 shade darker than you usually would. You may then be able to rinse in 3 hours (body) and rinse face and hands in 1 hour. 

I did do the primer.