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NEWS
numbuzin promotional banner for new released 4 skincare products including cleansers, toner pads, spot cream
new release | global exclusive

No.0: Acne-prone Skincare

Discover our new No.0 line's acne-prone skincare ─ including cleansers, exfoliating pads and spot cream designed to target blemishes and support clearer-looking skin ─ starting from zero.

Official exclusive pre-order discount & perks ends on Sep.25 (PDT)

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Close-up of a face with skin concerns: a red, inflamed blemish on the cheek, another on the chin, scattered smaller spots on the forehead, and light redness across the cheeks and nose, against a green background.
IngredientOct 2, 2026

Sulfur, Explained: Blemish Care from Cleanser to Spot Treatment

Sulfur, Explained: Blemish Care from Cleanser to Spot Treatment

Tiny, skin-colored bumps can make your skin look uneven before a more noticeable breakout even appears. Some days, blemish-prone skin feels oily and congested all over. Other days, one spot draws all your attention. That is why a routine that begins with cleansing and ends with targeted care can feel more useful than relying on a single step.

One ingredient that fits into both? Sulfur. Long used in skincare for blemish-prone skin, sulfur is known for its antimicrobial and keratolytic properties. In everyday terms, it helps address the buildup of dead skin cells while bringing a clarifying element to a formula.

What makes sulfur useful for blemish-prone skin?

When dead skin cells and excess oil build up, skin can look congested and feel less balanced. Sulfur is used in blemish-care products because it helps loosen surface buildup and has antibacterial and antifungal properties. Its role can change depending on the formula: in a cleanser, it is part of a wash-off step; in a spot cream, it is part of targeted, leave-on care.

That cleanser-to-spot-care approach is what makes sulfur a natural fit for numbuzin’s Zero Blemish Line. The line is designed around different steps of a blemish-care routine, rather than one ingredient repeated across every product. Two of its products contain colloidal sulfur: the Zero Blemish Clarifying 2% Sulfur Cleansing Foam and the Zero Blemish 3X Spot Correcting Cream.

Two blue tubes of numbuzin Zero Blemish Clarifying 2% Sulfur Cleansing Foam, 150 ml, leaning together, with white foam below and dabs of cream cleanser on the tubes, against a yellow-green background.
Start with the 2% Sulfur Cleansing Foam

The Zero Blemish Clarifying 2% Sulfur Cleansing Foam brings sulfur into your daily cleansing step. It contains 2% colloidal sulfur, along with gluconolactone, salicylic acid, centella leaf, and ceramide capsules. Its creamy formula creates a rich lather that washes away oil and daily buildup while leaving skin feeling comfortable after cleansing.

The formula has also been evaluated for antifungal activity, offering another reason to consider it when choosing a cleanser for blemish-prone skin.

In a four-week human-use test of the cleansing foam, the number of red papules decreased by 55.36% and pustules by 58.33%. The measured area of sebum secretion also decreased by 35.64%.

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Blue tube of numbuzin Zero Blemish 3X Spot Correcting Cream, 20 ml, listing 5% azelaic acid, 1% colloidal sulfur and 10% niacinamide, with a ribbon of white cream swirling around it against a blue background.
Follow with targeted spot care

For areas that need extra attention, add the Zero Blemish 3X Spot Correcting Cream after moisturizing.

Apply a thicker layer to a visible blemish, or a thin layer over an area that often needs extra care. In a four-week human-use test of the spot cream, the number of red papules decreased by 68.84% and pustules by 88.24%. Measured sebum secretion decreased by 29.17%.

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Make it a simple routine


Cleanse with the sulfur foam, apply your moisturizer, then use the spot cream where needed. In the morning, finish with sunscreen. If you already use exfoliating products, introduce new steps gradually and adjust your routine to what feels comfortable for your skin.

With Zero Blemish, sulfur has a place at both ends of your blemish-care routine: a clarifying start at the sink and targeted care for the spots that need it most.

Clinical figures reflect separate four-week human-use tests of the respective finished products. Individual results may vary.