The comparison, on the things that matter
Kojic acid shows change in four to eight weeks and is the more irritating of the two. Alpha arbutin takes eight to twelve weeks and can be used indefinitely. If your skin is already reactive, or you are treating melasma that will need months of work, arbutin is the one that survives the course.
Swipe the table sideways to see every column.
| Kojic acid | Alpha arbutin | |
|---|---|---|
| Typical strength | 1-2% in creams sold here | 1-2% |
| First visible change | 4-8 weeks | 8-12 weeks |
| How long you can use it | Cycles, with breaks | Indefinitely |
| Irritation | Common; stinging and redness | Uncommon |
| Stability | Oxidises — browns in the jar | Stable |
| Sensitisation risk | Contact dermatitis reported | Low |
| Status in Pakistan | Cosmetic, widely sold | Cosmetic, widely sold |
Why kojic acid creams turn brown
Kojic acid oxidises on contact with air and light. A cream that has gone from white to tan has lost potency, and the colour change is the only warning you get. Buy it in an opaque tube rather than a clear jar, keep it out of a sunlit bathroom, and treat a browned cream as finished rather than as still working.
This is the practical difference between the two actives and it is rarely mentioned on the packaging. Alpha arbutin does not do this, which is part of why it is the one formulators reach for when a product has to sit on a shelf in Pakistani heat before anyone opens it.
Which one for which problem
For post-acne marks and scattered dark spots, either works and kojic acid gets there sooner. For melasma, alpha arbutin is the better long-run choice because melasma needs months and recurs, and a course you have to stop for irritation is a course that fails. For skin that already reacts to actives, arbutin, and only arbutin.
Neither touches a depressed or rolling acne scar — that is a change in the shape of the skin, not its colour, and no topical reaches it. Neither works at all without daily sunscreen, because UV is what is driving the pigment in the first place. Ours is the Primer Gel Sunscreen at SPF 40 and PA+++; whichever you choose, buy one you will actually reapply, and understand that without it both of these actives are undoing their own work every morning.
Can you use them together?
Yes. Formulated products often combine them, including both of ours, where the amounts are balanced to be used together from the start. If you are layering two separate products, start one at a time: introducing both in the same week means that if your skin reacts you will not know which one to drop. Give the first one two weeks before adding the second.
What Elluvi uses, and why
Both, in one formula. Hydra Glow Cream at Rs. 1,449 and the Age Defying Serum at Rs. 1,299 each pair alpha arbutin 2%, stated, with kojic acid, alongside niacinamide 5% and retinol 0.3%. Arbutin carries the stated dose and the long-term work; kojic acid supports it on the same enzyme, at an amount balanced for combined use. Because both products also carry retinol, start at two to three nights a week; the serum is for experienced retinol users.
If you want a standalone kojic acid product instead, it is a legitimate active with real evidence behind it. Check that the percentage is printed, that the packaging is opaque, and that the cream is still the colour it was sold as.
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FAQs
Alpha arbutin is a brightening active used to help fade the look of dark spots and uneven tone, and it is gentler than hydroquinone. Elluvi uses 2% alpha arbutin in two night formulas, Hydra Glow Cream and Age Defying Serum, both with 0.3% retinol and niacinamide. Results take 8 to 12 weeks, with sunscreen every morning.