Frequently asked questions

Yes. You can apply the Vitamin C Clay Mask only where you need it, such as an oily T-zone, the chin, or a few spots and marks, instead of your whole face. Leave it on for the same 10 minutes, then rinse.

Spot use suits combination skin: the mask absorbs oil on the T-zone while drier cheeks get a hydrating serum instead. It also makes each jar last longer.

Dark spots on the face are caused by melanocytes producing extra melanin in one area. The most common triggers are: sun exposure (UV and visible light), inflammation from acne, eczema, bug bites or picking at skin, hormonal changes such as pregnancy or the pill (which can bring on melasma), irritation from harsh products or hair removal, and certain medications. On darker skin tones, post-inflammatory hyperpigmentation after breakouts is the leading cause of dark spots.

Post-inflammatory hyperpigmentation (PIH) is a flat dark mark that appears after the skin has been inflamed or injured, for example by acne, a cut, a burn, eczema, a rash or an aggressive skincare product. Inflammation signals pigment cells to make more melanin, which is left behind as a brown, gray or dark patch once the skin heals. PIH is more frequent and longer-lasting in skin of color (Fitzpatrick types IV to VI). Marks in the upper skin layer often improve over several months; deeper pigment can take a year or longer.

Dark spots after acne (post-inflammatory hyperpigmentation) are a color change only: the skin is flat and smooth, just darker. True acne scars change the skin's texture, either as indents (atrophic scars such as ice pick, boxcar or rolling scars) or raised bumps (hypertrophic or keloid scars). Red or purple marks, more visible on lighter skin, are called post-inflammatory erythema. Color marks usually improve with time, sun protection and brightening ingredients, while textured scars generally need professional procedures.

PIE and PIH are both flat marks left after a breakout, but they differ in color and cause. PIE (post-inflammatory erythema) is red, pink or purple and comes from small blood vessels widened or damaged by inflammation. PIH (post-inflammatory hyperpigmentation) is brown, gray or dark and comes from extra melanin.

To tell them apart, press a clear glass against the mark: PIE usually turns paler under the pressure, while PIH stays the same color. PIE shows up more on lighter skin, and PIH is more common and longer-lasting on medium to deep skin tones, though you can have both.

For either one, don't pick, calm breakouts early and wear SPF 30 or higher every day. Brightening ingredients such as vitamin C and niacinamide help PIH look less noticeable over time, and for red marks that last, a dermatologist can discuss in-office options. More in PIE vs PIH: red vs brown acne marks explained.

To prevent dark marks after acne: do not pick, squeeze or scrub blemishes, because extra inflammation means extra pigment; calm breakouts early with gentle, non-stripping products; wear broad-spectrum SPF 30 or higher every day so UV and visible light don't deepen marks; and add an antioxidant such as vitamin C or niacinamide to your routine. The faster inflammation settles, the lighter and shorter-lived any post-inflammatory hyperpigmentation will be.

It's best not to apply vitamin C and benzoyl peroxide at the same time. Benzoyl peroxide is a strong oxidizer, so it can oxidize vitamin C on the skin and reduce its benefit, and layering the two raises the risk of dryness and irritation.

Use vitamin C in the morning and benzoyl peroxide at night, or use a benzoyl peroxide wash and rinse it off before your vitamin C. Calming breakouts matters for preventing dark marks, so keep both in your routine, just apart.

Vitamin C helps the flat dark marks left by acne look less noticeable, but it won't change textured acne scars much. Flat marks are post-inflammatory hyperpigmentation, and vitamin C slows the pigment production behind them over 8 to 12 weeks.

Indented scars, such as ice pick or boxcar scars, come from lost collagen. Vitamin C supports collagen but can't rebuild that depth. Textured scars usually need professional procedures such as microneedling or laser, so ask a dermatologist.

A clarifying cleanser is a face wash designed to unclog pores and remove excess oil, sweat and buildup, usually with salicylic acid (a BHA), other gentle acids, clay or charcoal. It suits oily, combination and breakout-prone skin.

The difference from a brightening cleanser is focus: clarifying targets pores and oil, while brightening targets dullness and uneven tone, though many formulas do both. If your skin feels tight or squeaky after washing, use it once a day instead of twice.

Salicylic acid is a beta hydroxy acid (BHA) that dissolves in oil, so in a cleanser it can get into pores to loosen dead cells and sebum. Typically used at 0.5 to 2%, it helps keep pores clear, reduces blackheads and helps prevent the breakouts that leave dark marks.

Because it stays on for only 30 to 60 seconds, a wash is gentler than a leave-on BHA. It can still dry skin, so start once a day and moisturize afterward.

Non-comedogenic means a product is formulated not to clog pores or cause comedones (blackheads and whiteheads). The term isn't regulated in the US, and testing ranges from ingredient screening to human use studies.

It's a helpful guide for oily and breakout-prone skin, but reactions differ, so a non-comedogenic product can still break some people out. Watch your skin for 4 to 6 weeks when you try something new.