I had always thought of baking soda as one of those inexpensive products that somehow ends up everywhere. It sits in the kitchen cupboard, goes into cakes, helps with cleaning, and appears in countless traditional beauty recipes.
Then I came across another claim: mix baking soda into a paste, apply it to unwanted body hair, and repeated applications will supposedly make the hair disappear.
It sounds almost too convenient.
Baking soda—sodium bicarbonate—is alkaline, and that chemistry can affect the skin and the surface of hair. But there is an important difference between making hair or skin feel different and permanently switching off the follicle underneath it.
Why Baking Soda Became a Traditional Hair-Removal Trick
The logic behind the old recipe is fairly straightforward.
Hair is largely composed of keratin, while baking soda creates an alkaline solution when mixed with water. People noticed that repeated exposure could make hair feel rougher or more brittle and began associating this with weakened hair growth.
That’s probably where the legend started.
But baking soda isn’t comparable to a formulated depilatory cream. Depilatory products contain ingredients specifically designed to break chemical bonds within hair so the strand can be wiped away.
Ordinary baking soda is considerably milder.
Can It Actually Make Hair Disappear?
A baking-soda paste may exfoliate the skin and change the texture around very fine hairs, potentially making an area temporarily feel smoother.
What it hasn’t been shown to do is permanently destroy normal hair follicles.
That’s the important distinction.
The hair we see is only the shaft. The machinery producing the next strand sits below the skin inside the follicle.
Even if something affects the visible hair, a healthy follicle can simply produce another one.
Why People Sometimes Report Slower Regrowth
This part fascinated me because photographs can be convincing.
Someone applies a homemade mixture repeatedly and reports that the hair has become thinner.
Several things can create that impression.
Exfoliation can make skin smoother. Hair may break rather than being removed from the follicle. Lighting can make fine regrowth difficult to see. And if another removal method such as waxing was used beforehand, the natural regrowth cycle can easily be attributed to whatever mixture was applied afterward.
None of those effects demonstrate permanent follicle destruction.
The Traditional Baking Soda Paste
If someone simply wants to understand the traditional recipe, it’s usually remarkably basic:
1 teaspoon baking soda
Enough water to create a thin paste
The ingredients are mixed until smooth.
Older home-remedy versions sometimes recommend spreading the paste over unwanted hair and leaving it for long periods or even overnight.
That’s the part I would change.
Baking soda has a much higher pH than healthy skin. Prolonged exposure can disrupt the skin barrier and cause dryness, redness, burning, or irritation.
I’d never leave a concentrated baking-soda paste sitting on sensitive skin overnight in an attempt to make it “work harder.”
The Bikini Area Is Different
The bikini line deserves extra care.
Skin there experiences friction, shaving, sweat, and tight clothing already, so irritating products can quickly make things uncomfortable.
And baking soda shouldn’t be applied to genital tissue or mucous membranes.
Even on the external bikini line, I’d be particularly conservative because irritation can sometimes lead to post-inflammatory dark marks—the exact opposite of the smooth, even-looking result people are trying to achieve.
What Baking Soda Is Good at Doing
There is one cosmetic effect that makes considerably more sense.
Baking soda is mildly abrasive.
That means a very gentle, brief preparation can remove some material sitting on the skin’s surface and leave it temporarily feeling smoother.
But aggressive scrubbing isn’t necessary.
Hair follicles aren’t removed by scrubbing harder.
In fact, irritated freshly shaved skin plus an alkaline abrasive mixture is a combination I’d avoid entirely.
Why Shaving Doesn’t Make Hair Thicker
This myth is worth clearing up because it drives many people toward unusual remedies.
Shaving doesn’t increase the number of follicles or make them produce biologically thicker hair.
A razor cuts a naturally tapered hair across its thicker middle portion. When that blunt end emerges through the skin, it can feel coarser and look darker.
As the strand grows longer, that sensation changes.
So shaving isn’t secretly causing your body hair to multiply.
What Actually Produces Long-Term Reduction?
If the real goal is to stop shaving constantly, the follicle itself needs to be targeted.
Waxing and epilation remove hair from the root and therefore usually provide a longer smooth period than shaving, although the follicle eventually produces another strand.
Laser hair removal targets pigment associated with the hair follicle. Across multiple appropriately timed treatments, it can produce major long-term reduction.
Electrolysis treats individual follicles and can permanently remove treated hairs.
Those approaches explain something that baking-soda recipes don’t: how the follicle itself is being affected.
Why Multiple Sessions Are Needed
Hair doesn’t all grow simultaneously.
Each follicle passes through growth, transition, and resting stages.
Professional treatments therefore usually require multiple sessions because only a proportion of hairs are in the most useful stage for treatment at any one time.
This is also why a person’s body can appear smooth immediately after treatment and then suddenly show another group of hairs weeks later.
They aren’t necessarily the same hairs returning.
Different follicles are moving through their cycles.
The Baking Soda Jar Still Has Plenty of Uses
I understand why this recipe became popular.
Baking soda is inexpensive.
Almost everyone has it.
And compared with shaving every few days or paying for professional treatments, the idea of permanently removing unwanted hair with one kitchen ingredient is irresistible.
But its realistic cosmetic role is much smaller.
It can alter the surface environment of the skin and provide mild exfoliation. It may make an area temporarily feel smoother.
What hasn’t been demonstrated is the part everyone really wants: permanent destruction of unwanted hair follicles.
And that’s ultimately the difference between a clever home beauty trick and genuine permanent hair removal.
Sometimes the best thing a homemade recipe can do is make the skin feel a little smoother.
For everything happening beneath the surface, the follicle is still the real target.
For more fantastic tips on hair removal, check out this piece on how to permanently get rid of facial, body and pubic hair, or if you’re curious about other hair transformations, we’ve also got articles like Apply and turn white hair into black hair forever and Is this possible? ONION JUICE for hair regrowth.
