Unlike the super drying foaming washes you may be most familiar with, these give you a good lather and hydrate your skin.

Why? Because you only need to use a small amount at a time to scent your bath - then simply add cheaper foam for your bubbles, and you won’t go through the precious oil nearly as quickly.

Jenni Kayne, on the other hand, can. The designer's skincare line, Oak Essentials, makes an aromatic foaming bath oil that, ...