Are composite veneers good for eroded teeth if i want to get them whitened?

Maybe: So much depends upon how much enamel remains and how much tooth remains. The composite and ceramic veneers depend upon bonding to enamel for the best result. If there is minimal enamel and if much tooth is missing, then crowns would be your best treatment option.

Maybe: Eroded teeth are more difficult to bond to and composite will pick up stains over time. While often less expensive than porcelain veneers, they can lose their shine from the same thing that caused your erosion. Make sure you find out what caused the erosion before starting a cosmetic procedure.

Perhaps...: I would have the eroded teeth evaluated by a dentist. The dentist can determined if they are safe to endure whitening. Following whitening or bleaching, if lighter teeth are still not attained, then the dentist can determine if crowns or veneers or bonding is best to achieve the desired whitening. Please have this evaluated by a dentist.