A copper peptide cream would work well as part of the "sandwich method." Tretinoin is known to be extremely drying to the skin because it promotes fast cell turnover, so sandwiching a copper peptide cream can help you lock in moisture
These findings suggest that glutathione can be a practical addition to acne treatment regimens
Ingredients: Microcrystalline Cellulose, Vegetable Cellulose, Vegetable Magnesium Stearate, Silica
Benefits of glutathione skin whitening capsules Introduction Achieving brighter and fairer skin has been a goal for many people, and one of the solutions that have gained popularity is glutathione skin whitening capsules
In a landmark human trial comparing topical GHK-Cu to vitamin C and retinoic acid (tretinoin), GHK-Cu produced measurable collagen increases in 70% of study volunteers outperforming both comparator treatments (Abdulghani et al., 1998)
It also maximizes its glutathione content