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According toCleveland Clinic, 20% of adults have acne scars.

Despite being so common, these marks aren’t easy to target.

woman in yellow looking at acne scars

When it comes to ice pick divots, keloids, and hyperpigmentation, there’s no one-size-fits-all solution.

More often than not, topical solutions won’t be enough.

Within this larger category are three subgroups: icepick, boxcar, and rolling scars.

close up on woman with atrophic scars

Despite their depth, these V-shaped atrophic scars boast the smallest circumference (viaThe National Library of Medicine).

Comparatively, boxcar scars are circular, wide, and tend to lean more shallow.

For severe scarring, more in-depth treatment may be necessary.

woman receiving professional acne treatment

The appearance of icepick scars, in particular, can be improved with punch excision or punch grafting.

In both cases, V-shaped divots are removed using a surgical hole punch tool.

When it comes to boxcar scars, dermabrasion and microdermabrasion are both popular skin remodeling methods.

woman with raised acne scars

As dermabrasion is more invasive, it will require a local anesthetic.

Microdermabrasion is the more gentle relative of dermabrasion, and will not require a numbing.

Alternatively, dermal fillers, injectables made from hyaluronic acid or Bellafill, can minimize indents (viaHealthline).

dermatological injection into acne scar

Rolling scars and some boxcar scars are best treated when collagen is stimulated.

This can be done with the help of laser therapy.

Board-certified dermatologist Dr. Michele Green explains the process in a conversation withByrdie.

woman applying serum to cheeks

According toThe American Academy of Dermatology Association, those with darker skin are more likely to experience raised tissue.

Comparatively, hypertrophic marks are contained and can disappear over time.

Otherwise the scars are just going to keep popping up."

For smaller hypertrophic scars, silicone gel topicals have proven effective.

Not only will it provide necessary hydration, according to Dr. Andrea Suarez (akaDr.

Dray), but it will also reduce itchiness.

She also recommends centella serum to heal the skin barrier and (as always) SPF.

In the wake of inflamed pimples, they may do this as a reactionary measure.

In some cases, hyperpigmentation will fade without the help of topicals.

However, if yours is of the particularly-stubborn variety, consult your dermatologist.

Professional chemical peels, laser treatments, and even microdermabrasion can go a long way.

When in doubt, remember that SPF is one ofthe best skincare ingredients for treating stubborn acne scars.