CLEARSTEM Sulfur Spot & Mask for Acne — Weekly Sulfur + Kaolin Clay Mask, Glycolic Exfoliant for Oily & Blemish-Prone Skin

CLEARSTEM SULFUR SPOT&MASK is a dual-action sulfur and kaolin clay formula that works as a weekly refining face mask or a targeted spot treatment to reduce visible blackheads and surface congestion.

Designed for oily, combination, or congested skin, this mask pairs sulfur, kaolin clay and glycolic acid to lift impurities, absorb excess oil, and help even skin texture. Use it as a full-face ritual once a week to clarify and refine, or apply directly on breakouts and problem zones for more concentrated care. The formula focuses on surface-level cleansing and smoothing rather than deep medical treatment, making it easy to add to most skincare routines.

How should I use this mask for best results?

Apply a thin, even layer to clean, dry skin when using as a weekly mask, leaving it on according to package instructions before rinsing. For targeted care, dab a small amount directly onto blemishes or congested areas and leave on for the recommended short-wear time. Follow with your regular moisturizer and sunscreen during daytime.

• Full-face weekly application to refine texture and absorb oil
• Spot application for concentrated blemish control
• Followed by hydrating moisturizer to maintain barrier
• Works well after cleansing with CLEARSTEM GENTLECLEAN or preferred cleanser

What active ingredients are in the formula and what do they do?

The core actives are sulfur, kaolin clay, and glycolic acid. Sulfur supports a clearer surface environment, kaolin clay draws out excess oil and debris, and glycolic acid gently exfoliates to smooth texture and improve clarity. Together they offer a balanced approach to visible congestion and uneven skin tone without overly stripping the skin.

• Sulfur: supports a balanced surface environment
• Kaolin clay: absorbs oil and lifts surface buildup
• Glycolic acid: mild exfoliation to refine texture
• Formulated to maintain hydration and barrier comfort

Will this mask cause dryness or irritation?

The formulation aims to refine and balance rather than aggressively strip. Some people with very dry or sensitive skin may experience mild dryness or tingling from active ingredients; patch-testing first is recommended. Reduce frequency or use as a spot treatment if you notice irritation, and always follow with a nourishing moisturizer.

• Best for oily, combination, or blemish-prone skin
• Patch test if you have sensitive or reactive skin
• Switch to spot use or less frequent masking to minimize irritation
• Follow with hydrating products to support the skin barrier

How does this fit into a complete skincare routine?

Use CLEARSTEM SULFUR SPOT&MASK as a complement to a daily cleanser, treatment serums, and moisturizer. It pairs especially well with gentle cleansers like CLEARSTEM GENTLECLEAN and can replace or supplement other exfoliating treatments one day a week. Always apply sunscreen after daytime use of exfoliating products to protect freshly smoothed skin.

• Cleanse first with a gentle face wash
• Mask weekly or spot-treat as needed
• Moisturize and apply SPF for daytime protection
• Can be integrated with serums and targeted treatments

Who is this for: CLEARSTEM SULFUR SPOT&MASK is formulated for people with oily, combination, or visibly congested skin who want a controlled, dual-purpose treatment. It suits users who prefer a single product that can act as a weekly purifying mask and as a targeted spot remedy, and those looking to refine texture and reduce the appearance of blackheads while preserving hydration. If you have very sensitive or severely reactive skin, consult a skincare professional before introducing active exfoliants and sulfur-containing products into your routine.

Ingredients

5% Sulfur, Water, Kaolin, Glycerin, Lactic Acid, Glycolic Acid, Caprylic/Capric Triglyceride, Cetearyl Alcohol, Cetyl Alcohol, Niacinamide, Sodium Hydroxide, Acacia Senegal Gum, Bentonite, Cetearyl Olivate, Xanthan Gum, Sodium Stearoyl Glutamate, Sorbitan Olivate, Caprylhydroxamic Acid, Hydrolyzed Gardenia Florida Extract, Aloe Barbadensis Leaf Juice, Cannabis Sativa Seed Oil, Lavandula Angustifolia (Lavender) Oil, Vanilla Planifolia Fruit Extract, Zinc Oxide (CI 77947) , Tocopheryl Acetate, Glyceryl Caprylate, Triethyl Citrate, Maltodextrin, Sodium PCA, Citric Acid