12. Unexplained Sensitivity to Sun or Weather

If you notice heightened sensitivity to sunlight, wind, or cold, it could be a sign of overusing actives like AHAs or retinoids. This often means your skin’s protective barrier is compromised, leaving it vulnerable to environmental stressors. Switching to a gentler routine and applying a consistent, broad-spectrum SPF can help restore balance. For more on repairing and protecting your skin barrier, see Verywell Health.