Isoi One
One is isoi's All-in-One serum line for men, built around three formulas: Acne Doctor (Soothing), Blemish Care, and Moisture Doctor, each a 100ml single-step serum. The line shows up under a few spelling variants of "For Men" across listings (Four Man, Factman, Foreman), all the same core formulas. A separate Bulgarian Rose Makeup All in One (120g) sits outside the men's line as a general-use base. We carry 22 items in stock.
By Skinsli editorial Updated
Buying guide
isoi One: the All-in-One line for men explained
One groups isoi's All-in-One serums, a men's line built around three formulas plus one unrelated Bulgarian Rose base. Here's how the pieces split up and why the men's listings carry a few different spellings.
What "All-in-One" means here
Each All-in-One is a single 100ml serum meant to cover several routine steps at once, aimed at buyers who want one bottle instead of a separate toner, serum, and emulsion.
Acne Doctor All-in-One (Soothing)
Also listed as the Soothing All-in-One, this 100ml formula targets acne-prone skin with a calming focus rather than heavy moisture or blemish-spot treatment.
Blemish Care All-in-One
The Blemish Care All-in-One (100ml) is the more targeted spot-focused option in the line, sitting between the soothing Acne Doctor formula and the hydration-first Moisture Doctor.
Moisture Doctor All-in-One
Moisture Doctor (100ml) is the hydration-led formula, also listed as "Moisturizing All-in-One" on some cards, for men who want the single-bottle routine without an acne or blemish focus.
Why some listings say "Four Man" or "Factman"
The men's line is uploaded under a few different translations of "For Men", including Four Man, Factman, and Foreman. These are the same Acne Doctor, Blemish Care, and Moisture Doctor formulas, just listed by different catalog runs, so match by formula name rather than the exact vendor spelling.
Bulgarian Rose Makeup All in One, a separate product
The Bulgarian Rose Makeup All in One (120g) is not part of the men's line: it's a general-use makeup base sold under the same "All in One" naming, so don't assume it shares a formula with the men's serums.
Choosing between the three formulas
Pick Acne Doctor for calming acne-prone skin, Blemish Care for targeted spot concerns, or Moisture Doctor if hydration is the main goal and acne isn't a factor.
FAQ
Frequently asked questions
FAQ
Frequently asked questions
What does isoi One cover?
One is isoi's All-in-One line: three 100ml men's serums (Acne Doctor, Blemish Care, Moisture Doctor) plus a separate Bulgarian Rose Makeup All in One base that isn't part of the men's line.
What's the difference between Acne Doctor and Blemish Care All-in-One?
Acne Doctor (also listed as Soothing All-in-One) focuses on calming acne-prone skin, while Blemish Care is more targeted at spot concerns. Both are 100ml serums from the same men's line.
Why do some listings say "Four Man" or "Factman" instead of "For Men"?
These are different catalog translations of the same "For Men" line. The formulas, Acne Doctor, Blemish Care, and Moisture Doctor, are identical regardless of which spelling a listing uses.
Is the Bulgarian Rose Makeup All in One part of the men's line?
No, it's a separate 120g general-use makeup base. It shares the "All in One" name but not the formula or the men's-line focus.
What size are the isoi One men's serums?
Each of the three formulas, Acne Doctor, Blemish Care, and Moisture Doctor, comes in a single 100ml bottle.