Using ACV at full strength can lead to chemical burns and severe irritation. before topical use. Ways to Use Apple Cider Vinegar for Your Face - Healthline
The skin's natural "acid mantle" has a slightly acidic pH (around 5.5). When this balance is disrupted by harsh soaps or environmental factors, skin can become dry, rough, or irritated. Apple Cider Vinegar To Soften Skin
The malic and lactic acids in ACV help dissolve the "glue" holding dead skin cells together, promoting cell turnover and creating a softer texture. Using ACV at full strength can lead to
Diluted ACV can help restore the skin's optimal pH level, which improves its ability to retain moisture and defend against bacteria. skin can become dry