How about a Make - Over party, because usually one person gets a free make-up session, and there are usually make-up tips and free samples given away.
Or use the brand name of the cosmetics - Garnier Gorgeous - come and experience the world of cosmetics at our party on ....... etc (By the way, I'm not plugging that brand, it's just the first one that comes to mind!)
Don't use pamper because 1. it's seems patronising and 2. it's the brand name of nappies (diapers) in the UK!