Dark spots are the concern I hear about most from customers in their forties and fifties, and they are also the concern where people most often buy the wrong thing, because three quite different problems all look like brown patches in the mirror.
The three kinds of dark spot
1. Sun spots (solar lentigines)
Flat, sharply defined, tan to dark brown, on the parts of you that see the most sun: cheekbones, nose bridge, forehead, backs of hands. They appear gradually from your thirties onward and they do not fade in winter.
These are cumulative UV damage. They are the most responsive to topical treatment of the three, and the most preventable.
2. Melasma
Larger, symmetrical, blurry-edged patches, usually across the cheeks, upper lip, forehead. Often triggered by pregnancy, hormonal contraception or perimenopause, and worsened by heat as well as light.
Melasma is the difficult one. It is chronic, it relapses, and it responds to consistent management rather than cure. If you have it, a dermatologist is genuinely worth seeing rather than working through it alone.
3. Post-inflammatory hyperpigmentation
Marks left behind after spots, eczema, or picking. Flat, in the exact shape of whatever caused it, and it fades on its own eventually.
This is the most treatable and the one where patience does most of the work. Six to twelve months unaided; considerably faster with the right ingredients and sun protection.
Which ingredients actually fade dark spots?
Ranked by how well supported they are:
- Sunscreen. Not a fading ingredient, but nothing else works without it. UV drives new pigment faster than any serum removes old pigment. If you take one thing from this article, it is this.
- Vitamin C. Inhibits tyrosinase, the enzyme that makes melanin, and adds antioxidant protection. Best used in the morning under sunscreen.
- Niacinamide. Interrupts pigment transfer to surface cells. Well tolerated, works slowly, pairs with almost anything.
- Tranexamic acid. Particularly useful for melasma, which most other topicals struggle with. Increasingly common in Korean formulations.
- Alpha-arbutin. A gentler tyrosinase inhibitor, good for sensitive skin.
- Retinoids. Speed up cell turnover so pigmented cells clear faster, and address texture and fine lines at the same time.
- Azelaic acid. Useful when redness and pigmentation occur together, and safe in pregnancy, which most of the above are not.
What does not work?
- Lemon juice. It is not a stable vitamin C, the pH is wrong for skin, and the bergapten in citrus can cause phototoxic burns. Please do not.
- Aggressive scrubbing. Pigment sits below the surface. Scrubbing causes inflammation, and inflammation causes more pigment.
- Hydroquinone bought informally. It is regulated for good reason, and unregulated products in this category sometimes contain mercury or steroids. If you want hydroquinone, get it prescribed.
- Any single product in two weeks. Pigment turnover takes months. Anything promising two weeks is describing surface hydration, not pigment.
A routine that works
Morning: gentle cleanse, hydrating layer, vitamin C or niacinamide serum, moisturiser, sunscreen. Reapply sunscreen if you are outdoors.
Night: double cleanse, hydrating layer, treatment serum or retinoid, moisturiser.
What I would reach for:
- Anua Niacinamide 10% + TXA 4% Serum. Niacinamide plus tranexamic acid in one bottle covers two mechanisms at once, and it is the one I recommend most for general dark spots.
- Rohto Melano CC Vitamin C Essence. A Japanese drugstore staple, pure ascorbic acid, and very difficult to buy in Canada. Excellent value and genuinely effective. Use at night if you find vitamin C sensitising in daylight.
- Beauty of Joseon Glow Deep Serum, rice and alpha-arbutin, for gentler, slower fading on sensitive skin.
- Anua Azelaic Acid 10% if you have redness alongside pigment.
- SKIN1004 Centella Retinol 0.2 Boosting Shot, twice weekly to start, for turnover.
All of it is in Dullness & Dark Spots.
How long until you see a difference?
Post-inflammatory marks: eight to twelve weeks. Sun spots: three to six months. Melasma: managed rather than resolved, ongoing.
Take a photo in the same light on day one. Progress this slow is invisible day to day and obvious in a side-by-side.
Common questions
Can dark spots be removed permanently?
Sun spots and post-inflammatory marks can fade to invisible and stay that way with sun protection. Melasma tends to return.
Do I need sunscreen in a Canadian winter?
Yes. UVA passes through cloud and glass year-round, and snow reflects a substantial amount of UV back at your face.
Can I use vitamin C and niacinamide together?
Yes. The incompatibility claim comes from a study on raw ingredients at high heat, not finished products.
Which is stronger, vitamin C or tranexamic acid?
Different mechanisms rather than different strengths. Tranexamic acid tends to do better on melasma, vitamin C on general dullness and sun damage.
Should I see a dermatologist?
Yes if you have melasma, if a spot is changing shape, colour or size, or if nothing has shifted after six consistent months. A changing spot should be looked at promptly.