Is celebrity sexy teeth safe and effective?

Yes: I'm not certain what you mean by "celebrity sexy'. If you mean straight, really white smiles, the answer is a qualified yes. Simply whitening a beautiful smile is almost always safe (if done under dentist's supervision). Veneers or crowns made of porcelain can transform a smile, but must be done by a dentist who is experienced in cosmetic dentistry, working with an expert ceramist.

Results vary: Is it safe? Yes. Does it work? Yes and no. All it really is is a hydrogen peroxide dispensing pen that is applied to the teeth. Not sure how strong the peroxide is. How white teeth get depends on many things but most important are how strong the peroxide is and how long it stays in contact with your teeth. Fillings and crowns will not change color. Is it right for you? Only you can answer that.