Three things are here expressly forbidden: curling the hair, wearing gold, (by way of ornament,) and putting on costly or gay apparel. These, therefore, ought never to be allowed, much less defended, by Christians.
Related Commentaries of 1 Peter 3:3
1 Peter 3:3
3 Whose adorning let it not be that outward adorning of plaiting the hair, and of wearing of gold, or of putting on of apparel;