AHA BHA PHA 30 Days Miracle Cleansing Foam

There is a particular kind of product that becomes famous not because a dermatologist recommended it in a clinical journal, but because a nineteen-year-old in Seoul posted a before-and-after on Instagram that went viral. Some By Mi's 30 Days Miracle line is that product, and the cleansing foam is where most people's journey with the brand begins.

The premise is straightforward: combine AHA (citric acid), BHA (salicylic acid), and PHA (gluconolactone) into a single wash-off step, then add enough soothing botanicals to keep the whole thing from feeling like an assault on your moisture barrier. On paper, it reads like a chemistry teacher's ambitious lesson plan. In practice, it works better than it has any right to at this price point.

The foam itself is dense and satisfying — a thick cream that whips into a cloud of lather the moment it hits wet skin. You will notice the peppermint immediately. It announces itself with a cooling tingle that sits somewhere between refreshing and assertive, depending on your tolerance for menthol-adjacent sensations. If you are someone who finds peppermint in skincare delightful, this will feel like a spa moment. If you are someone who thinks essential oils in a cleanser is a red flag, well, you are not entirely wrong — Mentha Piperita Oil is a known irritant, and its inclusion in a product aimed at acne-prone (often sensitive) skin is the formula's most puzzling choice.

But let us talk about what the cleanser does well, because the list is longer than its shortcomings. The triple-acid approach, while it sounds aggressive, is actually quite measured in a wash-off format. Contact time with your skin is thirty to sixty seconds at most, which limits how much exfoliation the acids can realistically deliver. Think of it as a gentle daily polish rather than a weekly chemical peel. The salicylic acid provides some pore-clearing benefit even in brief contact, the gluconolactone adds a layer of hydration that most acid cleansers lack, and the citric acid contributes a mild brightening effect that makes skin look slightly more alive after rinsing.

The Truecica complex — Some By Mi's proprietary blend of centella asiatica triterpenes, tea tree water, and mugwort extract — is the formula's secret weapon. These are not marketing fillers. All four isolated centella compounds are present (asiaticoside, madecassoside, asiatic acid, and madecassic acid), which suggests the brand is serious about the soothing component. Dipotassium glycyrrhizate, a licorice-root derivative, adds another layer of anti-inflammatory support. The calamine in the formula is a nice touch too — it helps absorb excess oil without the stripping effect of harsh sulfates.

Speaking of sulfates: this cleanser does not contain any. The surfactant system relies on Sodium Methyl Cocoyl Taurate, Lauryl Betaine, and Coco-Betaine — all mild, non-stripping alternatives. This matters because many K-beauty acne cleansers at this price point still reach for sodium lauryl sulfate as a cheap foaming agent. Some By Mi did not take that shortcut.

The cleanser rinses clean without leaving a film or that tight, squeaky feeling that makes you immediately reach for a moisturizer. Oily skin types will appreciate the matte, fresh finish. Combination skin may notice that oilier zones feel balanced while drier areas feel comfortable rather than stripped. Normal skin types can use it without issue, though it is probably more cleanser than they need.

Here is where honesty demands its turn at the microphone: the '30 Days Miracle' branding is aspirational at best. Acne is not a thirty-day problem, and no cleanser — regardless of how many acids it contains — will resolve moderate acne in a month without additional treatments. Users who buy this expecting clear skin by day thirty are buying into marketing, not science. What they can realistically expect is a gradual reduction in blackheads, smoother texture, and fewer new breakouts over six to eight weeks, provided they are pairing this with a complete routine.

The peppermint oil remains the elephant in the room. It is a known sensitizer that offers no meaningful skincare benefit, and its presence in a product marketed for acne-prone skin (which often skews sensitive) is a formulary contradiction. Some users love the cooling sensation and associate it with cleanliness. Dermatologists, broadly speaking, would prefer it was not there.

For fourteen dollars, though, the value proposition is hard to argue with. You are getting a sulfate-free, triple-acid cleanser with genuine centella actives and thoughtful soothing ingredients for less than the price of a sad airport sandwich. The formula is not perfect — the peppermint oil is a genuine drawback, and the acid concentrations are modest enough that calling this a 'miracle' requires some generosity — but it delivers reliable daily exfoliation with less irritation potential than many cleansers that cost three or four times as much.

This is the kind of product that works best when you understand what it is and what it is not. It is not a replacement for prescription acne treatment. It is not going to transform your skin in a month. What it is: a well-formulated daily cleanser that gently exfoliates, manages oil production, and leaves your skin in a good state to absorb the rest of your routine. For the K-beauty curious, the budget-conscious, and the oily-skinned among us, that is genuinely worth celebrating.

Formula

The Science

The triple-acid approach in this cleanser draws from established research on multi-hydroxy acid formulations for acne management. A 2019 double-blinded comparative study published in Clinical, Cosmetic and Investigational Dermatology evaluated the combination of glycolic acid, salicylic acid, gluconolactone, and licochalcone A as adjunctive therapy for mild-to-moderate acne, finding that the multi-acid combination was non-inferior to adapalene monotherapy for reducing inflammatory lesions and showed improved results on post-inflammatory spots.

Salicylic acid's efficacy for acne is well-documented across decades of dermatological literature. As a lipophilic BHA, it can penetrate sebaceous follicles and exfoliate within the pore lining — a mechanism that remains relevant even in wash-off formats with brief contact times, though the intensity is naturally reduced compared to leave-on treatments.

Gluconolactone, the PHA component, offers a gentler exfoliation profile due to its larger molecular weight. Research has shown that PHAs provide comparable exfoliation to AHAs with significantly less irritation, while also functioning as humectants — a dual role that explains why this cleanser feels less stripping than a pure salicylic acid wash.

The inclusion of four isolated centella asiatica triterpenes (asiaticoside, madecassoside, asiatic acid, and madecassic acid) is pharmacologically relevant. Centella's wound-healing and anti-inflammatory properties have been documented in multiple clinical contexts, and a systematic review examining centella asiatica for acne treatment found a statistically significant reduction in both inflammatory and non-inflammatory lesions. In this cleanser, the centella complex serves as a counterbalance to the acids, theoretically reducing the irritation and barrier disruption that can accompany daily acid exposure.

References

1. The efficacy of glycolic acid, salicylic acid, gluconolactone, and licochalcone A combined with 0.1% adapalene vs adapalene monotherapy in mild-to-moderate acne vulgaris: a double-blinded within-person comparative study — Clinical, Cosmetic and Investigational Dermatology (2019)

Dermatologist Perspective

Dermatologists generally support the concept of multi-acid cleansing for oily, acne-prone skin, though they note that the wash-off format limits active ingredient contact time and therefore therapeutic intensity. Board-certified dermatologists frequently recommend salicylic acid as a first-line topical for mild comedonal acne, and its presence in this formula aligns with clinical guidelines. However, dermatologists consistently flag peppermint oil as an unnecessary addition that can trigger contact dermatitis in susceptible individuals. For patients seeking an exfoliating cleanser, dermatologists would likely approve of the sulfate-free surfactant base and centella-based soothing complex, while recommending that those with rosacea, eczema, or compromised barriers choose a gentler, fragrance-free alternative.

Guidance

Some By Mi's 30 Days Miracle line launched around 2018 and quickly became the brand's flagship, riding the K-beauty wave of ingredient-forward, affordable skincare. The cleansing foam was developed to extend the triple-acid philosophy of the bestselling toner into the first step of a routine, giving users consistent acid exposure from cleanser through treatment.

About Some By Mi Established Brand (5–20 years)

Some By Mi was founded in South Korea in 2016 and quickly became a K-beauty staple, exported to over 20 countries. The brand's 30 Days Miracle line, built around its proprietary Truecica formula, has accumulated thousands of reviews globally, though it relies more on consumer validation than peer-reviewed clinical research.

Brand founded: 2016 · Product launched: 2018

Myth vs. Reality

Myth

Using AHA, BHA, and PHA together in one product causes excessive irritation and over-exfoliation

Reality

In this wash-off cleanser, the acids have very brief contact time with skin, significantly limiting their exfoliating intensity. The formula also includes centella and licorice derivatives specifically to buffer potential irritation from the acid combination.

Myth

This cleanser will clear acne completely in 30 days as the name suggests

Reality

The '30 Days' branding is aspirational marketing. While some users see improvements within a month, acne is multifactorial and most dermatologists recommend 6-12 weeks to evaluate any new acne treatment. A cleanser alone is unlikely to resolve persistent acne.

FAQ

Common Praise

"Effectively reduces breakouts within weeks"

"Affordable for an active-ingredient cleanser"

"Leaves skin feeling clean without stripping"

"Pleasant minty-fresh sensation"

Common Complaints

"Peppermint oil causes irritation for sensitive skin"

"Can be drying if used twice daily"

"Mint scent is overpowering for some users"

"Results less dramatic than the 30-day marketing suggests"

Notable Endorsements

Popular recommendation in K-beauty communities and subredditsWidely featured in K-beauty starter kit roundups

Appears In

best cleanser for acne best cleanser for oily skin best k beauty cleanser best exfoliating cleanser for acne best budget cleanser for acne

Related Conditions

acne oiliness blackheads large pores texture

Related Ingredients

salicylic acid centella asiatica tea tree gluconolactone licorice root