If you've ever used a "brightening" product that promised the world and delivered nothing, you're not imagining it, and you're not alone. Most skincare marketed for hyperpigmentation was never actually tested on, or formulated with, melanin-rich skin in mind. That gap isn't a small oversight. It's the reason so many of us have spent years layering products that simply weren't built for how our skin works.
It starts with the melanocyte
Melanin-rich skin has more active melanocytes, the cells responsible for producing melanin — and those melanocytes respond more strongly to inflammation. A breakout, a scratch, a bout of eczema, even a mild sunburn can trigger these cells into overdrive, producing more melanin, for longer, than the same injury would in lighter skin. The result is post-inflammatory hyperpigmentation, or PIH: the dark mark that lingers long after the original blemish has healed.
This is why hyperpigmentation isn't just cosmetic for melanin-rich skin — it's cumulative. Every unprotected breakout, every skipped SPF day, every harsh treatment that irritates rather than heals adds another mark to fade. Understanding this is the first step to actually treating it, rather than chasing it.
The pathway that matters: tyrosinase
At the centre of melanin production is an enzyme called tyrosinase. It's the trigger that converts tyrosine into melanin inside the melanocyte. Slow that enzyme down, and you slow new pigment formation at the source — rather than trying to bleach or exfoliate away pigment that's already there.
Two of the most evidence-backed ingredients for doing this are:
- **Alpha-Arbutin** — a gentle, skin-friendly tyrosinase inhibitor that works well for daily, long-term use without the irritation risk of harsher alternatives.
- **Kojic Acid** — works via a different mechanism (copper chelation) to interrupt the same pathway, and is one of the most established actives in pigmentation correction for deeper skin tones.
Used together — one addressing new pigment formation, the other supporting it from a different angle — they form a more complete approach than either ingredient alone.
Why irritation is the real enemy
Here's the part that gets missed in most mainstream skincare advice: for melanin-rich skin, *irritation itself is a pigmentation risk*. An aggressive retinol, an over-exfoliated barrier, a fragrance that causes a mild reaction — any of these can trigger the same inflammatory cascade that causes PIH in the first place. That's why gentler alternatives, like Bakuchiol in place of retinol, aren't a compromise. They're often the more effective long-term choice, because they deliver renewal without reopening the door to new marks.
This is also why we choose actives like Lactic Acid over harsher AHAs where possible — effective enough to support cell turnover and fade existing pigmentation, gentle enough not to sensitise skin that's already working hard to protect itself.
The step most routines skip — and shouldn't
None of this works without daily SPF. UV exposure is the single biggest trigger for melanin overproduction, and without consistent protection, corrective skincare is fighting a losing battle — fading old marks while new ones form. For years, mineral sunscreens left a visible white or grey cast on deeper skin tones, so people understandably skipped them. That's a formulation failure, not a compliance failure, and it's one we think about closely in how we select and combine SPF products for melanin-rich skin specifically.
What this means for your routine
Hyperpigmentation on melanin-rich skin responds best to a layered approach: an active that inhibits new pigment formation, an active that supports cell renewal without triggering inflammation, and non-negotiable daily SPF that doesn't force you to choose between protection and how your skin looks underneath it. That's the thinking behind how we build every Core & Glow routine — starting with melanin-rich biology as the brief, not an afterthought.
*Nourish Your Core. Celebrate Your Glow.*