Glycolic acid benefits are real, and every other influencer on social media is recommending you apply it to your face, legs, arms, scalp, and even underarms. But the real question is, can you replace glycolic acid with a deodorant? Does it reduce underarm pigmentation? Does it control body odor, sweat, and improve skin texture? All the more, is glycolic acid for the armpits safe?
The short answer to the last question is yes. Glycolic acid is safe to use on underarms, but only if you use it in the right way. While glycolic acid shots help with skin rejuvenation, overusing it can worsen hyperpigmentation and create inflammation. Underarm skin is especially sensitive and highly prone to chemical burns and intense irritation.
Thus, there must be a proper understanding of using it on the armpits. In this blog, we will guide you on how glycolic acid works for sensitive areas, treats underarm pigmentation, controls sweat and odor, and the other considerations to keep in mind while using it.
Understanding Glycolic Acid and Its Skin Effects
Glycolic acid is a naturally occurring Alpha Hydroxy Acid (AHA), derived from sugarcane. In cosmetology, glycolic acid has become one of the most common chemical exfoliants due to its smaller molecular size.
It allows the AHA to penetrate the skin barrier far more effectively and loosen the bond that sticks dead skin cells to the skin. Thus, it provides brighter, clearer skin and a smoother skin texture.
It works at the cellular level by targeting the stratum corneum (the outermost layer of dead skin).
It works through cellular turnover mechanism, by allowing the dead skin cells to shed faster. When dead skin cells shed away, the fresh and less pigmented cells take their place. Therefore, the skin appears brighter and smoother.
Learn How to Start Using Glycolic Acid Without Irritation
Why Glycolic Acid for Underarms is Trending
Glycolic acid on armpits is not another skincare trend that will go away. It has clinically researched benefits that make glycolic acid effective for the microenvironment of the underarms.
The armpit area is highly prone to friction, moisture retention, and bacterial colonization, which causes hyperpigmentation and sensitivity to products. But glycolic acid, used with clinical caution, can target three major underarm complaints.
Biochemical Mechanism of Odor Control
A social media trend claims glycolic acid blocks sweat glands for odor control. But it does not. However, it does control sweat odor through another mechanism. According to research, human sweat is actually odorless at the beginning.
The resident armpit bacteria, Corynebacterium striatum and Staphylococcus, break down the lipids and amino acids in sweat and cause odor.
Glycolic acid adjusts the environment and eliminates this odor by:
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pH Modulation: Constant sweating and deodorant use can raise the pH level, which needs to be somewhere around 4.7 to 5.75. A higher pH level creates an alkaline environment that breeds odor-causing bacteria.
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Bacterial Inhibition: Applying glycolic acid to the underarms can temporarily lower the pH to an inhospitable level of 3.5 to 4.0. This rapid acidification stops the metabolic enzymes of underarm bacteria and neutralizes odor at the microbial level, without relying on artificial fragrances.
Treatment of Underarm Hyperpigmentation
The skin in the underarm region is more prone to post-inflammatory hyperpigmentation (PIH) and Acanthosis Nigricans. The contributing factors include constant shaving, waxing, hair removal creams, tight clothing, and friction. In fact your odor-controlling deodorants can cause overproduction of melanin in the area due to irritation. In this case, topical glycolic acid works in two ways:
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It promotes rapid shedding of existing layers of pigmented cells.
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It gently disrupts tyrosinase activity to inhibit melanin synthesis, promoting brighter skin.
Preventing Pseudofolliculitis Barbae (Ingrown Hairs)
Continuous shaving and waxing change hair growth in the underarm. After shaving or waxing, when hair follicles become blocked by the buildup of dead skin cells, the upward-growing hair curls backward under the skin. It causes inflammatory lesions known as ingrown hairs or razor bumps.
Here continuous chemical exfoliation using glycolic acid can clear dead cellular debris, which opens the path for clean hair growth.
Benefits of Using Glycolic Acid for Armpits
Along with face and scalp benefits, glycolic acid on armpits has shown a variety of benefits, from being used as a deodorant to a brightening ingredient. The main benefits are:
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Decrease Hyperpigmentation: Glycolic Acid reduces dark spots and discoloration by boosting cell turnover. It makes the pigmented dead skin cells shed faster and get replaced by fresh and even-toned ones.
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Exfoliates Dead Skin: Glycolic acid dissolves the bond that holds onto dead skin cells. Thus, the surface layer of dead cells shed faster, preventing pores from clogging and underarms appear smoother and brighter, as a result.
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Reduces Body Odor: It temporarily lowers the pH level in the armpit area. The lower pH level prevents the bacteria from breeding and causing odor. By clearing dead skin that traps bacteria, glycolic acid naturally reduces odor.
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Reduces Ingrown Hair: Regular yet gentle chemical exfoliation with glycolic acid eliminates the risk of ingrown hair. It promotes even hair growth after shaving or waxing.
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Soothes Skin Texture: By shedding dead skin cells around the armpits, it reveals smoother, more uniformly toned, and fresher skin.
These glycolic acid benefits for underarms make it an effective part of the underarm care routine. So, if you want to reduce pigmentation, roughness, and odor-causing bacteria, stop using your physical scrubs and switch to chemical exfoliation.
What Glycolic Acid Does Not Do?
Before you start using it and expecting it to fix all issues, you need to be aware of what it can and cannot do. It does not act as an antiperspirant that blocks sweat glands. It only controls bacteria from breeding in sweaty environments. Antiperspirants use aluminum salts to block sweat glands, which it does not. But it only controls odour and skin appearance.
Thus, glycolic acid as a deodorant works only on odor control for many people, but that too happens gradually. So, if you expect sweat control or instant brightness, glycolic acid will likely disappoint you as these are not the benefits you will get out of it.
How to Add Chemical Exfoliation to Your Underarm Routine?
Here is a complete, effective, and non-irritating routine for underarm using glycolic acid toner.
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Patch Test First: Before you start with a wider application, go in with a patch test. Apply a small amount of glycolic acid toner to your inner arm or a smaller section of your underarm. Wait for 24 hours. If you don’t see any abnormal redness, itching, or persistent stinging, continue with full application. Otherwise, don’t risk the use.
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Start with clean, completely dry skin, ideally in the evening: Damp skin increases acid penetration. It can lead to irritation from glycolic acid, especially in the underarm area. Completely dry your armpits before application. Furthermore, never apply to freshly shaved skin to avoid irritation. Wait at least 8 hours after shaving or waxing.
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Apply: Apply Asra Derm 7% Glycolic Acid toner to the cotton pad that comes along. Swipe the area with a soaked cotton pad. Leave it on.
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Wait 10-15 minutes before applying deodorant or antiperspirant: This is a non-negotiable step if you are layering products. Wait for the acid to fully absorb into the skin and work on the pH before using any deodorant. The wait reduces the chance of stinging or product pilling and makes it work effectively.
How Often Should You Use Glycolic Acid on Underarms? Frequency and Safety
Glycolic acid can irritate due to its acidic formula. Thus, you should always use it at the recommended frequency. Otherwise, the ingredient will cause side effects like inflammation and post-inflammatory hyperpigmentation.
The Right Frequency
Always start using 7% glycolic acid on armpits 1 to 2 times per week. This frequency allows the sensitive skin of underarms to adjust to the product. If your skin tolerates the use for two weeks, you may increase the frequency.
Use it 1-2 times per week for two weeks and see if it causes any stinging, itching, flaking, or persistent redness. If none of this occurs and your skin tolerates normally, gradually move to two to three times a week. Avoid using it daily, as the harsh chemical can irritate the delicate skin in the underarm folds.
In case of any irritation or dryness, you may also pair it with a body lotion like Gluvit-S Glutathione Face & Body Lotion to maintain hydration. But even with a moisturizer, do not overuse it. Excessive use can lead to PIH in darker complexions, more common in Pakistan.
Learn Why Daily Glycolic Acid Might Be Destroying Your Skin?
Best Glycolic Acid Toner for Underarms
There is no single best product for everyone out there. But we present to you Asra Derm’s Glycolic Acid Toner 7% that comes in an easy-to-use format.
The 7% glycolic acid toner comes with cotton pads for easier, effective, and convenient application. The product contains other skin-soothing ingredients like aloe vera water, rose water, green tea extract, panthenol, hyaluronic acid, willow bark extract, and mandelic acid.
These ingredients make it a comparatively soothing toner for Pakistani skin type. So, trust this glycolic acid toner by Asra Derm for beginner-friendly chemical exfoliation on underarms.
FAQs
Can I use glycolic acid toner for armpits?
Yes, you can use glycolic acid on underarms for odor control, pigmentation treatment, and texture improvement. But you must use it at the right frequency to avoid irritation and get brightening benefits.
How long does it take for glycolic acid to lighten underarms?
Glycolic acid lightens underarm skin, but it does not show instant results. You have to continue using it at the right frequency for at least 6-8 weeks for gradual cell turnover to shed dead skin cells and reveal a brighter tone.
Can glycolic acid help with underarm odor?
Glycolic acid does not directly control sweating. It only controls bacterial growth that disrupts the pH level, which leads to odor. So, it works on odor control through microbial mechanisms.
Why do my armpits get darker with glycolic acid?
Medium to dark skin tones in Pakistan are prone to pigmentation with chemical exfoliation. So, if you are using glycolic acid daily, at a higher concentration than 7%, and without following a proper routine, you will get hyperpigmentation. So, start slow, in lower concentration, and pair it with moisturizer.
