Beginning in your mid-30s and becoming more pronounced through perimenopause and midlife, skin undergoes a biological transition we call The Skin Shift. Hormones fluctuate, collagen declines, and barrier function weakens. Stress, poor sleep, nutritional habits and inflammation begin showing up differently on the skin. What once felt balanced can suddenly become dry, reactive, or unpredictable, and the routines that worked for years often no longer do. This transition calls for a different approach. Less aggression, more support, and skincare designed for evolving skin. Trêve was created for this chapter.