If you choose to make your own homemade charcoal mask, avoid using superglue. Superglue contains ingredients that can cause the mask to harden, which will damage your skin when you remove it.
Signs of allergy or irritation include redness, swelling, hives, or itchiness.
You can use a wide, flat foundation brush or one made specifically for applying masks. If you don’t have a brush, you can use clean fingertips to apply the mask. Try to be as gentle as you can when you spread the charcoal mask on blemish-prone areas to avoid irritation.
If you have eczema or sensitive skin, avoid using charcoal masks, which could damage your skin.