The 111SKIN Black Diamond Lifting & Firming Neck Mask is a hydrogel sheet mask specifically designed for the neck, chest, and décolletage area. Each pack contains five individual masks, with each sheet delivering 1.45 fluid ounces of serum. The formulation combines peptide and niacinamide—two well-known ingredients in skincare. Peptides are commonly included in products aiming to support the skin’s structural proteins, while niacinamide is recognized for its ability to improve skin tone, texture, and barrier function. This mask targets concerns such as fine lines, wrinkles, and loss of firmness along the neck and upper chest.

The hydrogel material allows the mask to adhere closely to the skin, enabling the serum to remain in contact with the treatment area without sliding or dripping. This physical property can help optimise ingredient delivery during the recommended wear time. The product is positioned for individuals who are looking to address visible signs of aging in the neck and décolletage, an area that often receives less attention than the face but is equally prone to sagging and crepe-like texture.

As a sheet mask format, it provides a concentrated dose of active ingredients in one session. The formulation is gentle enough for regular use as part of a skincare routine, though frequency may depend on individual skin tolerance. The Black Diamond range from 111SKIN is known for incorporating advanced technology and targeted actives, and this neck mask follows that approach. It does not contain harsh abrasives or heavy oils, making it suitable for a variety of skin types, including those with sensitive skin that may react to stronger anti-aging ingredients. The product is intended to supplement an existing regimen rather than replace daily moisturising or sunscreen use.