Assess skin acid-base state and barrier health from measured pH.
| Item | Formula / Note | Source / Standard |
|---|---|---|
| Normal range | healthy skin surface pH usually sits between four point five and five point five | EEMCO guidance, skin surface pH |
| Measurement method | a flat glass electrode reads the surface avoiding recent cleansing residue | EEMCO guidance, skin surface pH |
| Effect of deviation | alkaline shift weakens barrier enzymes while excess acidity irritates | EEMCO guidance, skin surface pH |
皮肤pH测定工具,根据实测pH值判断皮肤酸碱状态与屏障健康度,提供护肤调整建议。