Why Shaving Brushes Work?

Shaving brushes improve the quality of every shave by:

Softening Skin: Brushes get underneath the beard, allowing shaving products to further penetrate and tenderize.

Raising Whiskers: While below the beard, the brush stands facial hair at attention, making it easier for the razor to remove it. Brushes also help to lift out stubborn ingrown hairs by acting as a light exfoliant. This is in direct contrast to shave cream application by hand, which tends to mat down facial hair.
Creating a Slick Barrier: The moistened brush, combined with shaving cream, creates an ultra-lubricated coat upon which a razor can glide. Consequently, less razor pressure is required to achieve a close shave.
The Lather: The warm and pleasant lather a brush creates is simply the cherry on top.