Baking soda, also known as sodium bicarbonate, is one of the most common household ingredients found in kitchens around the world. While it is mainly used for baking, cleaning, and deodorizing, many people also use it as part of their skincare routine. From DIY face masks to acne spot treatments, baking soda has become a popular home remedy for various skin concerns.

Supporters claim that baking soda can exfoliate the skin, reduce acne, lighten dark spots, and soothe irritation. However, dermatologists often warn that improper use can damage the skin barrier, disrupt the skin’s natural pH, and lead to dryness or irritation.

So, is baking soda good for your skin or harmful?

The answer depends on how it is used, how often it is applied, and your individual skin type. In this comprehensive guide, we will explore the science behind baking soda, its possible skincare benefits, the risks associated with its use, and safer ways to incorporate it into your skincare routine.

What Is Baking Soda?

Baking soda is a white crystalline powder chemically known as sodium bicarbonate. It is mildly alkaline and reacts with acids to release carbon dioxide gas, which is why it is commonly used in baking.

Chemically, baking soda has a pH of around 8 to 9, making it significantly more alkaline than healthy skin. Human skin naturally maintains a slightly acidic pH of around 4.5 to 5.5.

This acidic surface is known as the “acid mantle,” which helps:

• Protect against harmful bacteria
• Maintain moisture balance
• Support healthy skin barrier function
• Prevent irritation and inflammation

Because baking soda is alkaline, it can interfere with this protective layer when used excessively.

Why People Use Baking Soda on Skin

Despite the concerns, baking soda remains popular in DIY skincare because it is:

• Cheap and widely available
• Easy to mix into homemade remedies
• Known for mild abrasive properties
• Associated with oil absorption
• Used traditionally in home beauty treatments

People commonly use baking soda for:

• Acne treatment
• Exfoliation
• Skin brightening
• Odor control
• Itchy skin relief
• Blackhead removal
• Razor burn treatment

Some users report positive short-term results, especially for oily skin. However, many dermatologists caution against regular use because the long-term risks can outweigh the temporary benefits.

How Baking Soda Affects Skin

To understand the benefits and risks, it is important to know how baking soda interacts with the skin.

Skin’s Natural pH

Healthy skin is slightly acidic.

4.5≤Skin pH≤5.54.5 \leq \text{Skin pH} \leq 5.54.5≤Skin pH≤5.5

Baking soda, however, is alkaline.

Baking Soda pH≈8.3\text{Baking Soda pH} \approx 8.3Baking Soda pH≈8.3

When an alkaline substance is applied to the skin, it can:

• Strip natural oils
• Increase dryness
• Weaken the skin barrier
• Increase sensitivity
• Trigger inflammation

Research and dermatologist commentary suggest that repeated exposure to alkaline substances can damage the acid mantle and worsen skin problems over time.

Potential Benefits of Baking Soda for Skin

Although there are risks, baking soda may provide some benefits when used occasionally and carefully.

1. Exfoliation

One of the main reasons people use baking soda is for exfoliation.

The fine particles can help remove:

• Dead skin cells
• Dirt
• Excess oil
• Surface impurities

This can temporarily leave the skin feeling smoother and softer.

How It Works

Baking soda acts as a physical exfoliant. When rubbed gently onto the skin, it helps loosen dead skin cells from the surface.

Possible Advantages

• Smoother texture
• Temporary brightness
• Reduced roughness

Risks

Over-exfoliation is common with baking soda scrubs. Excessive rubbing can create microtears and irritation.

2. Oil Absorption

Baking soda may absorb excess sebum from oily skin.

This is why some people use it as:

• A face mask
• A spot treatment
• A cleanser for oily areas

Temporary oil reduction may help reduce shine.

However, stripping too much oil can cause the skin to produce even more oil later, potentially worsening acne.

3. Acne Spot Treatment

Many DIY skincare recipes recommend baking soda for acne.

Some believe it may help because baking soda has:

• Mild antiseptic properties
• Anti-inflammatory effects
• Oil-absorbing ability

Studies and expert opinions suggest baking soda may temporarily dry out pimples.

Why Some People See Improvement

Acne often involves:

• Excess oil
• Bacteria
• Inflammation

Baking soda may reduce surface oil and irritation for a short period.

Important Limitation

There is limited scientific evidence proving baking soda is an effective acne treatment. Dermatologists generally recommend safer ingredients like:

• Salicylic acid
• Benzoyl peroxide
• Retinoids
• Niacinamide

4. Relief from Itching and Irritation

Some people add baking soda to bath water to relieve itching caused by:

• Insect bites
• Mild rashes
• Sunburn
• Poison ivy
• Chickenpox

Baking soda baths may temporarily soothe irritation because of their calming effect on inflamed skin.

However, baking soda baths are not suitable for everyone, especially people with sensitive skin or open wounds.

5. Odor Control

Baking soda is widely known for neutralizing odors.

It may help reduce body odor because it neutralizes acidic sweat compounds.

This is why baking soda is sometimes used in:

• Natural deodorants
• Foot soaks
• Underarm treatments

However, prolonged use under the arms can cause irritation, redness, and burning.

6. Temporary Skin Brightening

Some DIY skincare enthusiasts use baking soda to brighten dull skin or reduce tanning.

This effect is usually temporary and mainly caused by exfoliation.

By removing dead skin cells, the skin may appear fresher and slightly brighter.

However, there is no strong scientific evidence showing that baking soda safely lightens pigmentation or dark spots long term.

Risks of Using Baking Soda on Skin

While baking soda may offer short-term effects, the risks are significant—especially with frequent use.

1. Disrupts the Skin Barrier

This is the biggest concern associated with baking soda.

The skin barrier protects against:

• Pollution
• Bacteria
• Moisture loss
• Irritants

Because baking soda is alkaline, it weakens this barrier.

Once the barrier is damaged, the skin becomes more vulnerable to:

• Dryness
• Irritation
• Redness
• Breakouts
• Sensitivity

2. Causes Dryness

Baking soda removes natural oils from the skin.

This can result in:

• Flaky skin
• Tightness
• Rough texture
• Cracking

Dry skin may become even more irritated over time.

Ironically, excessive dryness can trigger the skin to produce more oil, worsening acne in some individuals.

3. Skin Irritation and Burning

Sensitive skin reacts particularly badly to baking soda.

Common reactions include:

• Redness
• Burning
• Stinging
• Itching
• Rash formation

Some people experience irritation after just one use.

4. Increased Sensitivity

Damaging the acid mantle makes skin more reactive.

You may become more sensitive to:

• Sunlight
• Skincare products
• Pollution
• Wind
• Heat

This can lead to long-term skin sensitivity.

5. May Worsen Acne

Although baking soda may dry pimples temporarily, excessive use can actually worsen acne.

How?

When the skin barrier is compromised:

• Inflammation increases
• Bacteria spread more easily
• Oil production becomes unstable

Dermatologists often warn that harsh DIY treatments can trigger more breakouts over time.

6. Risk of Microtears

Baking soda particles can be abrasive.

Aggressive scrubbing may create microscopic tears in the skin.

These microtears can lead to:

• Irritation
• Inflammation
• Premature aging
• Increased sensitivity

7. Not Suitable for Sensitive Skin

People with the following conditions should avoid baking soda:

• Eczema
• Rosacea
• Psoriasis flare-ups
• Sensitive skin
• Broken skin
• Open wounds

These skin types already have compromised barriers and are more prone to irritation.

8. Risk of Chemical Reactions

Some DIY recipes combine baking soda with acidic ingredients such as:

• Lemon juice
• Vinegar
• Apple cider vinegar

This combination can be extremely irritating and may cause burns or severe inflammation.

Can Baking Soda Help Acne?

This is one of the most common questions.

The answer is complicated.

Possible Short-Term Effects

Baking soda may:

• Dry out oily pimples
• Reduce surface oil
• Calm mild inflammation

Long-Term Concerns

Regular use can:

• Damage the skin barrier
• Cause irritation
• Increase inflammation
• Trigger rebound oiliness

Most dermatologists do not recommend baking soda as a primary acne treatment.

Safer acne treatments include:

• Salicylic acid
• Benzoyl peroxide
• Adapalene
• Niacinamide
• Tea tree oil (diluted)

Is Baking Soda Safe for Face?

Using baking soda on the face is generally riskier than using it on the body.

Facial skin is thinner and more sensitive.

Frequent use on the face may lead to:

• Dryness
• Irritation
• Increased sensitivity
• Premature aging
• Uneven skin texture

If used at all, it should only be:

• Occasional
• Mildly diluted
• Applied briefly
• Followed by moisturizer

How to Use Baking Soda More Safely

If you still want to try baking soda on your skin, caution is extremely important.

General Safety Tips

• Do a patch test first
• Use only occasionally
• Never scrub aggressively
• Avoid broken skin
• Moisturize afterward
• Stop immediately if irritation occurs

Simple Baking Soda Paste

Ingredients

• 1 teaspoon baking soda
• 2–3 teaspoons water

Method

1. Mix into a smooth paste
2. Apply gently
3. Leave for less than 1 minute
4. Rinse thoroughly
5. Apply moisturizer

Avoid leaving it on the skin for long periods.

Baking Soda Bath

Some people use baking soda baths for itching.

Method

• Add a small amount to lukewarm bath water
• Soak briefly
• Rinse afterward
• Moisturize immediately

Avoid if you have:

• Open wounds
• Severe skin conditions
• Active infections

Safer Alternatives to Baking Soda

Many skincare experts recommend gentler ingredients that provide similar benefits without damaging the skin barrier.

For Exfoliation

Use:

• Lactic acid
• Mandelic acid
• PHA exfoliants
• Oatmeal scrubs

For Acne

Use:

• Salicylic acid
• Benzoyl peroxide
• Niacinamide
• Sulfur treatments

For Oil Control

Use:

• Clay masks
• Niacinamide serum
• Gel cleansers

For Brightening

Use:

• Vitamin C
• Alpha arbutin
• Licorice extract
• Azelaic acid

These options are generally safer and better researched.

Who Should Avoid Baking Soda on Skin?

Avoid baking soda completely if you have:

• Sensitive skin
• Rosacea
• Eczema
• Psoriasis
• Open cuts
• Active infections
• Allergic skin reactions

Children and babies should also avoid topical baking soda treatments unless recommended by a doctor.

What Dermatologists Say

Most dermatologists do not recommend baking soda as a regular skincare ingredient.

The biggest concern is disruption of the skin’s acid mantle and pH balance.

Some experts acknowledge that baking soda may provide temporary relief for oily skin or isolated pimples, but they emphasize that safer alternatives exist.

Community discussions on skincare forums also frequently warn users about irritation and barrier damage caused by baking soda misuse.

Common Myths About Baking Soda for Skin

Myth 1: Natural Means Safe

Many natural ingredients can still irritate the skin.

Baking soda is a chemical compound and should be treated carefully.

Myth 2: Baking Soda Permanently Clears Acne

There is no strong scientific evidence supporting long-term acne control with baking soda.

Myth 3: Baking Soda Lightens Skin Safely

Any brightening effect is usually temporary exfoliation, not true skin lightening.

Myth 4: Daily Use Is Fine

Daily use can severely damage the skin barrier and increase irritation.

Final Verdict: Should You Use Baking Soda on Skin?

Baking soda may offer temporary benefits such as exfoliation, oil reduction, and mild acne relief. However, these effects often come with significant risks.

Because baking soda is highly alkaline, frequent use can disrupt the skin’s natural pH balance and damage the protective barrier. This may lead to dryness, irritation, inflammation, sensitivity, and even worsening skin problems over time.

For most people, especially those with sensitive or acne-prone skin, safer skincare ingredients are a better option.

If you choose to use baking soda:

• Use it rarely
• Apply gently
• Never over-scrub
• Moisturize afterward
• Stop immediately if irritation develops

Healthy skin depends on maintaining a strong, balanced skin barrier—and protecting that barrier should always be the priority.