Can I use this scrub on my face or only on the body?

This is a body product, and it is best kept off the face. The sugar crystals and clay particles are suited to the thicker skin found on the body — legs, arms, back, elbows, knees — where a firmer polishing action is useful. Facial skin is considerably thinner and more reactive, and body-grade exfoliating particles can cause micro-irritation there, especially around the eyes, on the cheeks, or on skin prone to redness.

The areas where a scrub like this earns its place are exactly the ones a shower gel handles least well:

• Elbows and knees — where skin is naturally thicker and builds up dry, grey-looking layers;
• Legs — particularly before or between shaving cycles, when flaky texture makes skin look dull;
• The back and shoulders — areas that tend to accumulate excess oil and surface impurities and are hard to cleanse deeply otherwise;
• Feet and heels — a common addition, since rough texture responds well to combined mechanical and absorbing exfoliation.

If you want the charcoal-and-clay style of cleansing for your face, look for a product formulated specifically for facial use, where particle size and concentration are adjusted for thinner skin. Also avoid using this scrub on delicate zones such as the neckline if your skin there reacts easily — treat those areas more like facial skin than body skin.