Does Some By Mi live up to its reputation? The short answer: yes, for blemish-prone and oily skin, the formulas are solid. But the "30-day miracle" promise is a marketing angle, not a universal truth, and some flagship products are for skin that already knows how to handle acids. Here's a complete, unfiltered review, based on real ingredients and realistic timelines.
Some By Mi is a Korean brand founded in 2015, specializing in active skincare based on AHA, BHA, PHA, centella asiatica, and retinol. It has established itself in France thanks to its iconic toner and a strong presence on social media, driven by before/after acne transformations that have racked up tens of millions of views. The range now covers cleansing, treatment, exfoliation, eye contour, and sun protection.
What this article allows you to do: evaluate whether the flagship products suit your skin, understand which active ingredients are really in the formulas, and avoid common mistakes that negate results.
Looking for Some By Mi products directly? The complete selection is available at Holy Skin, with delivery from France within 72 hours. (view Some By Mi range)
Some By Mi philosophy: what the brand really promises 🔬
Some By Mi builds its formulas around a simple principle: clinically recognized active ingredients, combined at sufficient concentrations to produce a visible effect. The brand doesn't bet on innovation at all costs; it bets on the effectiveness of already documented ingredients.
Recurring active ingredients in the range:
- AHA (alpha-hydroxy acids), mainly glycolic acid and lactic acid: exfoliate the skin's surface by dissolving the bonds between dead cells. Visible result: radiance and smoothed texture in 3 to 4 weeks.
- BHA (salicylic acid): penetrates the pore, dissolves oxidized sebum that causes blackheads. Particularly effective on oily and combination skin.
- PHA (polyhydroxy acids): larger exfoliants than AHAs, they stay on the surface and are suitable for reactive skin due to their gentler action.
- Centella asiatica: soothing extract that strengthens the skin barrier and reduces post-acne redness.
- Snail mucin: promotes cell regeneration, moisturizes, and improves the appearance of minor scars.
- Retinol: accelerates cell renewal, reduces fine lines and hyperpigmented spots.
What the brand doesn't directly promise but what users expect: a complete eradication of acne in 30 days. This is where disappointments arise. Some By Mi can significantly reduce blemishes on mildly to moderately acne-prone skin. For severe hormonal or cystic acne, a dermatologist remains the proper point of entry.
Review of Some By Mi flagship products: honest analysis 🧴
Among the dozens of brand references, four products concentrate most of the research and French-speaking feedback. Here's what they're really worth, with ingredients to back it up.
The AHA BHA PHA 30 Days Miracle toner: effective, but not for everyone
This is the product that built Some By Mi's reputation. This liquid toner combines the three families of exfoliating acids in a light formula, applied to the face after cleansing. The exfoliating effect is real: pores appear less visible, texture is unified, and superficial pimples subside.
What before/after photos on social media don't show: the product can be irritating in the first few weeks, especially for dry or sensitive skin. A slight burning sensation at the beginning of use is normal, but it should not persist. Without SPF the next morning, acids make the skin photosensitive and spots can worsen.
Expert tip: Many start the toner every day from the first week. This is a common mistake that causes redness and dryness. Start with 2 or 3 applications per week, in the evening on clean skin. Gradually increase over 3 to 4 weeks depending on your skin's tolerance.
The Snail Truecica Miracle Repair cream: a solid repair treatment
This cream combines black snail mucin and centella asiatica extract to target irritated skin, minor acne scars, and chronic redness. The texture is light, absorbed quickly, suitable for oily to combination skin. Very dry skin may find it insufficiently nourishing in winter.
The soothing effect is immediate on reactive skin. Improving pigmented scars, however, requires 6 to 10 weeks of regularity. This is a foundational treatment, not an express corrector.
The Super Matcha Pore Clean cleansing gel: an honest cleanser
Matcha extract and green clay give this cleansing gel a purifying action on dilated pores and blackheads. The texture lathers lightly, rinses well, and leaves no film. For oily or combination skin, it's a good cleansing base. For dry skin, it can cause slight dryness in the long term, which should be compensated for with a hydrating toner.
Caution: no cleanser alone can "erase" blackheads. The gel prepares the ground; it does not replace BHA in the routine.
Some By Mi Retinol Intense retinol: reserved for accustomed skin
Some By Mi's retinol range includes a serum, an eye cream and an introductory kit. The "Retinol Intense" is not a product for beginners: the retinol concentration is sufficient to cause a purging phase in the first few weeks (temporary worsening of blemishes before improvement) and noticeable dryness. If you have never used retinol, start with a lower concentration product, then move up to this range after 2 to 3 months of adaptation.
If you are pregnant or breastfeeding, topical retinol is contraindicated. Consult your doctor before any use.
Some By Mi before and after: what to really expect 📅
Viral before/after photos on TikTok and Instagram often show dramatic transformations in 30 days. Here's what studies on active ingredients realistically allow us to state:
| Product | First visible effects | Solid results | Conditions |
|---|---|---|---|
| AHA BHA PHA Toner | 2 to 4 weeks (radiance, texture) | 6 to 8 weeks (pores, blemishes) | Mandatory SPF in the morning, progressive frequency |
| Snail Truecica Cream | Immediate (soothing) | 6 to 10 weeks (scars) | Daily use, morning and evening |
| Matcha Cleansing Gel | Immediate (freshness, cleanliness) | N/A: cumulative effect via routine | Double cleansing recommended in the evening |
| Retinol Intense | 4 to 6 weeks (after purging) | 8 to 12 weeks | Progressive use, strict SPF, avoid during pregnancy |
The most underestimated variable in all these Some By Mi reviews: consistency. An active product used 3 times a week for 8 uninterrupted weeks produces better results than a product used every day for 2 weeks and then abandoned.
If you don't yet know your skin type or where to start, the free Holy Skin skin diagnostic allows you to get a personalized recommendation in minutes.
Who is Some By Mi really for? 🎯
Some By Mi is not universal. Its active formulas are optimized for a specific skin profile, and using them without matching that profile can produce the opposite of the desired effect.
Some By Mi is a good fit if:
- Your skin is oily to combination, with dilated pores, blackheads, or recurrent mild to moderate imperfections.
- You already have a basic routine (cleanser, moisturizer, SPF) and are looking for an active to integrate gradually.
- You are comfortable with exfoliating acids or want to discover them with a well-documented product.
- You are looking for Korean skincare with a solid quality/price ratio, without unnecessary luxury packaging.
Some By Mi is less suitable if:
- Your skin is very dry or very sensitive: acids risk aggravating the situation without long acclimatization.
- You hope to resolve severe cystic or hormonal acne: dermatological treatment remains a priority.
- You don't use SPF: without sun protection, acids expose your skin to more damage than they repair.
To go further in choosing your Korean brand according to your skin, our guide to the best Korean brands compares positioning and target skin types.
Compatibility of Some By Mi products with other active ingredients 🔄
One of the most frequent mistakes with Some By Mi: layering too many active ingredients in the same routine. The acids in the 30 Days Miracle range do not combine with certain common ingredients.
| Active ingredient to combine | Compatible with AHA/BHA/PHA? | Explanation |
|---|---|---|
| Centella asiatica | Yes | Soothing, reduces post-acid irritation |
| Snail mucin | Yes | Regenerating, neutral on acids |
| Niacinamide (low conc.) | Yes, with caution | At high concentration, can reduce AHA efficacy |
| Vitamin C | Not in the same routine | Incompatible pH: separate morning and evening |
| Retinol | Not in the same routine | Exfoliating overload, risk of severe irritation |
| Other acid exfoliant | No | Never layer two acid products |
The basic rule: if you use the AHA BHA PHA toner in the evening, your morning routine can include an antioxidant (vitamin C or niacinamide) followed by an SPF. Retinol, if you use one, should be used in the evening, alternating with the toner, never simultaneously.
To understand how to integrate Korean active ingredients into a complete routine, this article details the logic of layering with comparable ranges.
Our final verdict on Some By Mi 💬
Some By Mi is neither a scam nor a revolution. It is a serious Korean brand, with well-constructed active formulas based on ingredients whose effectiveness is documented. Its strength: making exfoliating acids accessible at a reasonable price, with pleasant textures and logical routines. Its weakness: the "miracle" promise creates sometimes unrealistic expectations, especially for dry skin or severe acne.
Three things to remember before buying:
- The AHA BHA PHA 30 Days Miracle toner is their best reference for oily to combination skin with mild to moderate blemishes.
- The retinol in the range is for skin accustomed to active ingredients, not for beginners.
- Without morning SPF, no Some By Mi acid product will produce the expected results.
If your profile matches, it's a brand worth trying. The complete selection is available on Holy Skin, delivered within 72 hours from France. (view Some By Mi products)
