1. Removes Dead Skin Cells

Baking soda’s gritty texture allows it to act as a mild exfoliating scrub, helping remove the outer layer of dead skin cells.

This can temporarily make the skin feel smoother.

2. Absorbs Excess Oil

Because baking soda can absorb oil, some people use it to reduce shine or temporarily mattify the skin.

This effect may make the complexion appear brighter in the short term.

3. Helps Clean Surface Buildup

By removing oil, dirt, and dead skin cells, baking soda may give the skin a temporary “polished” appearance.

However, these effects are superficial and short-lived.

The Biggest Concern: Skin pH Damage

The primary reason dermatologists warn against baking soda is its alkaline pH.

Healthy skin naturally maintains a slightly acidic pH between 4.5 and 5.5, which helps maintain moisture and protect against bacteria.

Baking soda has a pH of about 9, which is significantly more alkaline.

Applying such an alkaline substance to the skin can:

• Disrupt the skin’s protective barrier

• Strip natural oils

• Cause dryness and irritation

Experts warn that repeated use may lead to increased sensitivity, redness, and breakouts.

Why Mature Skin Is More Sensitive

As skin ages, several changes occur:

• Reduced oil production

• Thinner skin barrier

• Slower collagen production

• Decreased moisture retention