If you’re dealing with heightened hyperpigmentation this summer, you’re not alone. In a recent study of 48,000 people, as many as 50% reported suffering from at least one pigmentation disorder, which includes both hyperpigmentation (darkened patches) and hypopigmentation (lightened patches).
And if you’re looking for the cause, hyperpigmentation isn’t linked to a single trigger – it’s a spectrum of responses. From post-sun patches and acne marks to melasma flare-ups and stubborn scarring, these uneven tones are often triggered by the very things we associate with summer: sun exposure, heat, inflammation, and dehydration.
Once that melanin response is activated, reversing it can be a long and complex process — especially if your skin is sensitive or reactive.
Treating pigmentation effectively isn’t always about reaching for harsh acids. The first step is understanding why pigmentation occurs, so you can choose barrier-friendly solutions that don’t weaken your skin.
If you’re looking for a serum that fits the bill, you might have heard of Sachi Skin’s Triphala Pigmentation Corrector. A long-standing favourite since its 2021 launch, this serum promises to brighten and even out skin tone gently and effectively. To find out how well it really works, we took a closer look at its ingredients and put it to the test.
What causes hyperpigmentation?
At its core, hyperpigmentation is about melanin overproduction. It’s your skin’s built-in defence mechanism, designed to protect against UV damage. But when that process goes into overdrive through sun, hormonal shifts, inflammation, or injury, it leads to discolouration.
And it’s not always one-tone brown spots. Hyperpigmentation often presents as a mix of reds, yellows, shadows and dullness, which is why most treatments prove ineffective. Especially in summer, when your skin is battling a perfect storm: UV rays, heat-induced inflammation, excess sebum, and moisture loss.
What makes pigmentation so persistent is that it isn’t just sitting on the surface; it’s rooted in multiple biological pathways. So you need more than one solution. And ideally, one that doesn’t come at the cost of your skin barrier.
How Sachi Skin’s Triphala Pigmentation Corrector became a fan favourite
Sachi Skin’s Triphala Pigmentation Corrector launched in 2021 and has quickly become the brand’s bestseller. The formula is designed to address multiple forms of uneven tone, including redness, sallowness, and residual scarring, while also factoring in skin prone to inflammation or sensitivity.
It’s safe for pregnancy and breastfeeding, fragrance-free, and doesn’t include the usual culprits that often trigger reactivity.
For those reasons, it’s become a recommended option for people with darker skin tones or anyone with a compromised skin barrier looking to treat pigmentation more conservatively.
While there’s no public peer-reviewed data behind the efficacy claims, the ingredient list pulls from established pigment-reducing compounds used in clinical dermatology.
Hexylresorcinol is often used as a gentler alternative to hydroquinone and has been shown to reduce melanin production. The formula also includes peptides, which help slow the transfer of pigment to the skin’s surface. Anti-inflammatory ingredients are there too to help prevent the kind of irritation that often makes pigmentation worse.
The brand cites a 30.5% improvement in brightness after 28 days of use, based on clinical testing. But clinical trials aside, photos speak louder than words:
What’s actually in the formula?
It’s positioned as a corrective serum for hyperpigmentation — though unlike many in that category, it doesn’t rely on exfoliating acids like glycolic or lactic, or on ingredients like hydroquinone, which can be harsh or sensitising for some skin types. Instead, the focus is on barrier-friendly pigment control through a blend of Ayurvedic and lab-developed actives.
The formula includes Triphala, a blend of three antioxidant-rich fruits used in Ayurvedic medicine, along with ingredients that often appear in dermatology-led pigment treatments. Some of the actives include:
- Hexylresorcinol – a known tyrosinase inhibitor
- Diglucosyl gallic acid – which activates in the skin to help reduce pigmentation
- Peptides – designed to interrupt melanin transfer.
There’s also encapsulated microalgae to even your skin tone and clarity. But what’s missing is as notable as what’s included: no AHAs or BHAs, no retinoids, and no bleaching agents. That gives it a very different profile to most brightening serums — especially those targeted at stubborn or post-inflammatory hyperpigmentation.
Texture and first use
The serum is light and fluid, with no noticeable scent or residue. It absorbs quickly and layers easily under SPF or moisturiser, without pilling or interfering with other products. On first use, it feels more like a hydrating serum than a treatment – which makes sense, given how many pigment products tend to leave skin tight, dry, or mildly irritated.
None of us on the team are currently dealing with active hyperpigmentation, so we can’t comment on the 28-day brightening claim or show substantial results (though the photos speak for themselves). That said, I have tried it for over a week, and it layered well, caused no irritation, and didn’t leave skin feeling stripped. Despite the number of actives, it doesn’t feel like a treatment product and, by the end of the week, my skin was feeling calmer and slightly brighter.
Who is it for?
While it’s positioned as a pigmentation serum, it reads more like a formula built for managing stressed-out, easily-inflamed skin that also happens to be dealing with uneven tone. It may suit those with hormonal patches, post-acne marks, or recurring redness — particularly where stronger treatments have caused setbacks. It’s also one of the few brightening serums that doesn’t lean on exfoliation, making it a rare fit for sensitive skin types or those undergoing barrier repair.
At £73 for 30ml, it’s not exactly low-commitment. But it’s also not out of step with other serums in the so-called treatment category, especially those aimed at long-term use.
See also our review of 47 Skin’s acne-friendly SPF, how to treat chicken skin, and why you should always double cleanse.