Detailed Steps

1. Start with a clean face: Wash your face to remove makeup, dirt, and impurities, ensuring maximum benefit from the mask. 
2. Unfold the mask: Carefully remove the mask from its packaging, being careful not to tear the sheet as it's drenched in serum. 
3. Apply the mask: Position the mask over your face, ensuring it covers your entire face and smoothing out any air bubbles to ensure it sticks properly to your skin. 
4. Relax and wait: Leave the mask on for 15 to 20 minutes. This allows the active ingredients, like black mud for a deep cleanse and aloe vera for hydration, to penetrate your skin. 
5. Remove the mask: Gently peel off the sheet mask. 
6. Massage in the serum: Do not wash your face. Instead, gently massage the excess serum into your skin in circular motions until fully absorbed. This helps lock in the hydration and benefits from the mask.