High-frequency wands are considered a safe, gentle, and therapeutic approach to skin enhancement, healing, and energizing. If your skin is sensitive, you might experience tingling, redness, or swelling that usually disappear in a few days. To prevent that, stick to a maximum of 2-3 minutes for each area, once every two-three days. Finally, you shouldn't use the device on severe sunburns, eczema, psoriasis, rosacea, during pregnancy, or if you have a history of heart disease.