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dimanche 5 juillet 2026

Baking soda on the face: benefits, risks, and how to use it safely

 

What Is Baking Soda?

Baking soda, also known as sodium bicarbonate, is a naturally occurring alkaline compound. It appears as a fine white powder and has been used for centuries in cooking, medicine, and cleaning.

Its main characteristics include:

  • Mild abrasive texture
  • Alkaline pH (around 8.3)
  • Odor-neutralizing ability
  • Antibacterial properties under certain conditions
  • Oil-absorbing qualities

Because of these characteristics, many people assume it can improve skin health.

However, facial skin behaves very differently from kitchen surfaces.


Understanding Your Skin's Natural Barrier

Before putting baking soda on your face, it's important to understand how healthy skin works.

The outermost layer of your skin contains a protective coating called the acid mantle.

This barrier:

  • Keeps moisture inside the skin
  • Protects against bacteria
  • Prevents irritation
  • Supports healthy skin bacteria
  • Helps maintain elasticity

Healthy skin typically has a pH between 4.5 and 5.5, making it slightly acidic.

Baking soda has a pH of approximately 8.3, making it significantly more alkaline.

Repeated exposure can disrupt the acid mantle, leading to numerous skin problems.


Why Do People Put Baking Soda on Their Face?

Many DIY beauty enthusiasts claim baking soda can help with:

  • Acne
  • Pimples
  • Blackheads
  • Whiteheads
  • Oily skin
  • Dark spots
  • Uneven texture
  • Dull complexion
  • Enlarged pores

Some people notice temporary improvements because baking soda removes oil and dead skin cells.

However, these short-term effects may come at the expense of long-term skin health.


Potential Benefits of Baking Soda for the Face

Although experts don't recommend routine use, baking soda may offer some limited benefits when used carefully.

1. Gentle Physical Exfoliation

One of baking soda's most popular uses is exfoliation.

Its fine particles help remove:

  • Dead skin cells
  • Surface dirt
  • Oil buildup

Exfoliation can leave the skin looking smoother and brighter immediately after use.

However, over-exfoliating can quickly damage healthy skin.


2. Temporary Oil Control

People with oily skin often notice that baking soda absorbs excess sebum.

Benefits may include:

  • Less shine
  • Cleaner-looking pores
  • Reduced greasy feeling

Unfortunately, removing too much oil can cause the skin to produce even more oil later.


3. May Help Remove Surface Impurities

When mixed with water, baking soda forms a mild paste that may help remove:

  • Dirt
  • Sweat
  • Makeup residue
  • Pollution particles

It should never replace a proper facial cleanser.


4. Temporary Improvement in Skin Texture

By removing dead skin cells, the face may temporarily appear:

  • Softer
  • Smoother
  • Brighter
  • Fresher

These effects are usually short-lived.


5. May Help Dry Out Individual Pimples

Some people apply baking soda only on active pimples.

The drying effect may reduce:

  • Excess oil
  • Swelling
  • Redness (temporarily)

However, excessive drying often worsens irritation.


Risks of Using Baking Soda on the Face

This is where the biggest concerns arise.

Dermatologists generally discourage using baking soda regularly because the risks often outweigh the benefits.


1. Damages the Skin Barrier

The skin barrier protects against environmental damage.

Frequent baking soda use may:

  • Strip natural oils
  • Damage protective lipids
  • Increase water loss
  • Make skin vulnerable

A damaged barrier often results in chronic irritation.


2. Causes Dryness

Because baking soda removes natural oils, it can leave skin feeling:

  • Tight
  • Dry
  • Rough
  • Flaky

People with naturally dry skin are especially vulnerable.


3. Skin Irritation

Common symptoms include:

  • Burning
  • Itching
  • Stinging
  • Redness
  • Peeling

Sensitive skin may react after just one use.


4. Disrupts Skin pH

Healthy skin depends on a slightly acidic environment.

Baking soda raises skin pH significantly.

This disruption can:

  • Encourage bacterial growth
  • Slow healing
  • Increase inflammation
  • Trigger breakouts

5. May Worsen Acne

Ironically, many people use baking soda to treat acne.

But repeated use may:

  • Increase irritation
  • Damage healing skin
  • Trigger more oil production
  • Lead to additional breakouts

6. Can Increase Sensitivity

Once the skin barrier is damaged, your face becomes more sensitive to:

  • Sunlight
  • Wind
  • Cold weather
  • Skincare products
  • Makeup

7. Higher Risk of Infection

Small cracks in damaged skin make it easier for bacteria to enter.

This increases the risk of:

  • Pimples
  • Skin infections
  • Delayed healing

Who Should Avoid Baking Soda on the Face?

Avoid using baking soda if you have:

  • Sensitive skin
  • Dry skin
  • Rosacea
  • Eczema
  • Psoriasis
  • Active acne inflammation
  • Open wounds
  • Sunburn
  • Recent chemical peels
  • Recent laser treatments

Children should also avoid facial baking soda treatments.


Can Baking Soda Help Acne?

This remains one of the most searched questions online.

The answer is:

Possibly in the very short term—but not as a long-term solution.

Why people think it works:

  • Dries oil
  • Removes dead skin
  • Cleans pores

Why dermatologists discourage it:

  • Damages skin barrier
  • Causes inflammation
  • Worsens irritation
  • Increases post-acne marks

Safer acne treatments include:

  • Salicylic acid
  • Benzoyl peroxide
  • Niacinamide
  • Azelaic acid
  • Adapalene (where appropriate)

Can Baking Soda Remove Dark Spots?

There is no scientific evidence proving baking soda fades pigmentation.

Some people believe brighter skin after exfoliation means dark spots are disappearing.

In reality:

  • Dead skin removal creates temporary brightness.
  • Pigmentation remains unchanged.

Repeated irritation may even worsen discoloration.


Can Baking Soda Shrink Pores?

No.

Pore size is largely determined by:

  • Genetics
  • Age
  • Skin elasticity
  • Oil production

Baking soda may temporarily make pores appear smaller by removing oil, but it does not permanently shrink them.


How to Use Baking Soda Safely (If You Choose to Try It)

If you still want to experiment, use extreme caution.

Step 1: Perform a Patch Test

Apply a small amount behind the ear or on the inner arm.

Wait 24 hours.

If irritation develops, do not use it on your face.


Step 2: Mix Properly

Never apply dry baking soda directly.

Mix:

  • 1 teaspoon baking soda
  • 2 teaspoons water

Create a smooth paste.


Step 3: Apply Gently

Use clean fingers.

Avoid:

  • Eyes
  • Lips
  • Broken skin

Do not scrub aggressively.


Step 4: Leave Briefly

Keep on skin for 30 seconds to 1 minute only.

Longer exposure increases irritation.


Step 5: Rinse Thoroughly

Use lukewarm water.

Avoid hot water.

Pat dry with a soft towel.


Step 6: Moisturize Immediately

Use a gentle moisturizer to help restore the skin barrier.

Look for ingredients like:

  • Ceramides
  • Glycerin
  • Hyaluronic acid
  • Squalane

How Often Can You Use It?

Experts generally recommend not using baking soda as part of a regular facial skincare routine.

If someone still chooses to use it despite the risks, it should be very infrequently—certainly not every day and not several times a week. Frequent use greatly increases the chance of damaging the skin barrier.


Signs You Should Stop Using Baking Soda

Discontinue immediately if you experience:

  • Burning
  • Redness
  • Peeling
  • Severe dryness
  • Rash
  • Swelling
  • Pain
  • Increased acne
  • Cracked skin

If symptoms persist, consult a dermatologist.


Better Alternatives to Baking Soda

Modern skincare offers safer and more effective ingredients.

For Exfoliation

Choose products containing:

  • Lactic acid
  • Mandelic acid
  • Glycolic acid
  • Polyhydroxy acids (PHAs)

These provide controlled exfoliation with less risk than harsh DIY scrubs.


For Oily Skin

Look for:

  • Niacinamide
  • Salicylic acid
  • Clay masks
  • Zinc PCA

These ingredients help control oil without disrupting the skin barrier.


For Acne

Effective options include:

  • Salicylic acid
  • Benzoyl peroxide
  • Adapalene
  • Azelaic acid

These have been studied extensively and are supported by clinical evidence.


For Brightening

Instead of baking soda, consider:

  • Vitamin C
  • Niacinamide
  • Alpha arbutin
  • Licorice root extract
  • Tranexamic acid (where appropriate)

These ingredients can improve uneven skin tone over time when used consistently.


Common Myths About Baking Soda for Skin

Myth 1: Natural Means Safe

Not all natural ingredients are suitable for facial skin.

Myth 2: Baking Soda Permanently Removes Acne

It may temporarily dry pimples, but it does not treat the underlying causes of acne.

Myth 3: It Whitens Skin

Baking soda does not change your natural skin color. It may only remove dull surface cells, making the skin appear brighter for a short time.

Myth 4: More Scrubbing Gives Better Results

Excessive scrubbing can cause microtears, irritation, and inflammation.

Myth 5: Everyone Can Use It

Skin types vary greatly. What seems harmless for one person may trigger severe irritation in another.


Frequently Asked Questions

Can I leave baking soda on my face overnight?

No. Leaving it on overnight significantly increases the risk of dryness, irritation, and skin barrier damage.

Can I mix baking soda with lemon juice?

This combination is not recommended. Lemon juice is highly acidic and can irritate the skin, especially when paired with an abrasive ingredient like baking soda.

Can baking soda remove blackheads?

It may remove some surface debris, but it does not effectively eliminate blackheads. Ingredients such as salicylic acid are much better suited for this purpose.

Is baking soda good for sensitive skin?

No. Sensitive skin is especially prone to irritation from baking soda.

Can teenagers use baking soda for acne?

It is better for teenagers to use gentle, evidence-based acne treatments rather than DIY remedies that may damage the skin.

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