Several ordinary, affordable products you can pick up at a drugstore or online can meaningfully improve acne scars over time. The best option depends on the type of mark you’re dealing with: flat dark spots, red or pink marks, or indented (pitted) scars each respond to different ingredients. None of these will work overnight, but with consistent use over weeks to months, the right product can make a visible difference.
First, Identify Your Type of Scar
What most people call “acne scars” actually falls into a few distinct categories, and telling them apart determines which product will help most.
Brown, gray, or dark patches that sit flat against your skin are post-inflammatory hyperpigmentation (PIH). These form when inflammation triggers excess melanin production. They’re more common in medium to dark skin tones, and their color stays consistent regardless of temperature or activity. About 80 to 90% of people with acne scarring have some form of these flat, discolored marks or atrophic (indented) scars.
Red, pink, or purplish flat marks are post-inflammatory erythema (PIE). These come from dilated blood vessels beneath the skin’s surface and tend to be more visible on fair to medium skin. Their color can shift with temperature or blood flow.
Indented or pitted scars are caused by collagen loss during the healing process. Raised, thickened scars are less common but also respond to specific treatments. Each type benefits from a different approach.
Retinol for Indented Scars and Dark Marks
Retinol is one of the most effective over-the-counter ingredients for acne scars, especially indented ones. It works by activating the skin cells (fibroblasts) that produce collagen through a specific growth factor pathway. This gradually fills in depressed scars from below. At the same time, retinol protects existing collagen by blocking the enzymes that break it down, so the new collagen your skin builds actually sticks around.
On the surface level, retinol speeds up the turnover of skin cells, which helps fade dark marks by pushing pigmented cells out faster. It also strengthens the skin’s outer barrier and reduces water loss, which keeps healing skin more resilient. You can find retinol in serums, moisturizers, and targeted treatments at concentrations ranging from 0.25% to 1%. Starting at a lower concentration and using it every other night helps your skin adjust without excessive peeling or redness.
Results aren’t instant. Expect at least 8 to 12 weeks of consistent use before you notice meaningful changes in texture or pigmentation. For deeper indented scars, improvement continues gradually over several months as collagen accumulates.
Vitamin C Serum for Dark Spots
If your main concern is brown or dark marks left behind after breakouts, a vitamin C serum is one of the most accessible and well-supported options. Vitamin C interrupts melanin production at its source by interfering with tyrosinase, the enzyme that drives pigment formation. It does this by binding to copper at the enzyme’s active site, essentially disabling the machinery that creates dark spots. It also reduces the stores of reactive oxygen species that fuel continued pigment production.
Look for serums containing L-ascorbic acid (the most studied form) at concentrations between 10% and 20%. These are widely available at drugstores and online for under $20. Apply it in the morning under sunscreen for the best results, since vitamin C also provides some antioxidant protection against UV-related damage throughout the day.
Glycolic Acid and Other Chemical Exfoliants
Alpha hydroxy acids like glycolic acid and lactic acid are effective at fading discoloration from acne. They work by dissolving the bonds between dead skin cells on the surface, which speeds up the removal of pigmented layers and reveals fresher skin underneath. Glycolic acid in particular acts relatively quickly on skin color changes, making it a strong choice for post-inflammatory hyperpigmentation and uneven tone.
Salicylic acid (a beta hydroxy acid) takes a different approach. It’s oil-soluble, so it can penetrate into pores and has antibacterial properties that help prevent new breakouts while you’re treating existing marks. If you’re still getting active acne alongside scarring, salicylic acid pulls double duty. For purely fading dark marks, though, glycolic or lactic acid tends to show faster results.
You’ll find these in toners, serums, and peel pads at concentrations between 5% and 10% for daily use. One important caution: don’t combine strong AHA or BHA products with retinol in the same routine, especially when you’re starting out. Using both can cause over-exfoliation, leading to peeling, burning, redness, and increased sensitivity. A simple approach is to use your acid exfoliant in the morning and retinol at night, or alternate nights.
Rosehip Oil for Overall Skin Repair
Rosehip oil is a surprisingly effective option that you can find for under $15 at most drugstores. It’s rich in omega-3 and omega-6 fatty acids, which are anti-inflammatory and support the skin’s natural repair process. It also contains vitamins A, C, and E, giving it mild collagen-stimulating and brightening properties. The vitamin A content works similarly to retinol (it’s a natural precursor), helping stimulate collagen production and improve the look of both pigmented marks and fine textural irregularities.
Rosehip oil works well as a nighttime moisturizer layered over other treatments, or on its own for people with sensitive skin who can’t tolerate stronger actives. It won’t produce dramatic results as fast as retinol or vitamin C, but it supports healing and keeps skin supple while other treatments do their work.
Silicone Gel Sheets for Raised Scars
If your acne left behind raised, thickened scars rather than flat marks or indentations, silicone gel sheets are the go-to drugstore product. These are adhesive strips you place directly over the scar for several hours a day. They work primarily through occlusion and hydration: by trapping moisture against the skin’s surface and slightly increasing the temperature underneath, they promote the enzyme activity that breaks down excess collagen in raised scar tissue.
Silicone sheets are available at any pharmacy, typically near the wound care aisle. They’re reusable for several days each and are one of the few products with a well-established track record for flattening and softening hypertrophic scars. For best results, wear them for at least 12 hours daily over a period of two to three months.
Sunscreen Protects Every Other Effort
This is the product people overlook most, and it might matter more than anything else on this list. Scar tissue is especially vulnerable to UV damage because it lacks the normal levels of melanin that shield healthy skin. Sun exposure directly worsens hyperpigmentation, darkening the exact marks you’re trying to fade, and can also cause abnormal lightening in some scars.
Any broad-spectrum sunscreen with SPF 30 or higher works. Apply it daily, even on cloudy days, even if you’re mostly indoors. Without consistent sun protection, the fading you achieve with vitamin C, retinol, or exfoliants can be undone by a single week of unprotected sun exposure. This is especially true for darker skin tones, where post-inflammatory hyperpigmentation is already more pronounced.
Putting a Routine Together
You don’t need all of these products at once. A practical starting point for most people is a vitamin C serum in the morning under sunscreen, plus retinol at night two to three times per week. That combination addresses both pigmentation and texture. After your skin adjusts to retinol over a few weeks, you can increase frequency to nightly use.
If you want to add a chemical exfoliant, use it on the nights you skip retinol. Rosehip oil can go on top of any nighttime treatment as a moisturizing layer. The key is patience and consistency: most over-the-counter scar treatments need a minimum of two to three months to show clear results, and deeper scars may take six months or longer of steady use.