Chemical Peels for Dark Spots and Acne Scars: Light, Medium or Deep?

A chemical peel can fade dark spots and soften shallow acne scars by removing damaged surface skin so fresher, more even skin grows back. Peels come in three depths, light, medium and deep, and the right one depends on what you want to treat, your skin tone and how much downtime you can take. For most dark spots, a series of light peels or a targeted depigmentation peel works better and more safely than one strong peel.

This guide explains the three peel depths, the acids used (glycolic, salicylic, lactic and TCA), which peel suits sun spots, melasma, post-acne marks and acne scars, and what each costs at our Carlsbad studio.

Light, medium or deep: the three peel depths

Depth	Typical acids	Healing time
Light (superficial)	Glycolic, lactic, salicylic, mandelic, low-strength TCA	1 to 7 days of redness and light flaking
Medium	Higher-strength TCA, often combined with other acids	7 to 14 days of swelling, crusting and peeling
Deep	Phenol	14 to 21 days, done under anesthesia in a surgical setting

Light peels work on the top layer of skin and can be repeated every few weeks. Medium peels reach the upper dermis and treat deeper sun damage and some scarring in fewer sessions, with about a week of visible peeling. Deep peels are a surgical procedure with months of sun avoidance, and they are not among the peels we offer.

Which acid does what?

• Glycolic acidThe smallest alpha-hydroxy acid. Speeds cell turnover and fades sun spots and dullness; also helps fine lines.
• Salicylic acidAn oil-soluble beta-hydroxy acid that clears pores. Best for acne-prone skin and post-acne marks.
• Lactic and mandelic acidGentler alpha-hydroxy acids, good for sensitive skin and for starting slowly on darker skin tones.
• TCA (trichloroacetic acid)Strength sets depth. Low strengths give a light peel; higher strengths a medium peel for sun damage and shallow acne scars.
• Depigmenting agentsKojic acid, azelaic acid and arbutin slow melanin production. Used in peels made for melasma and stubborn pigment.

The best peel for dark spots

Dark spots come in different types, and each responds differently. Our hyperpigmentation guide explains them in more detail.

• Sun spots and age spots: a series of light glycolic or TCA peels fades them well. Single, well-defined spots often clear faster with a light treatment such as BBL HERO; see age spot removal.
• Melasma: it is hormonal and sun-triggered, and strong peels can make it worse. Gentle peels and a depigmentation peel such as Cosmelan MD, with daily sunscreen, work best. Read about melasma treatment and HALO for melasma.
• Post-acne marks (post-inflammatory hyperpigmentation): salicylic and glycolic peels clear acne and fade the brown or red marks it leaves.

Can a chemical peel fix acne scars?

Peels improve shallow scars, rough texture and the marks acne leaves behind. A medium-strength TCA peel builds some collagen and softens shallow rolling scars. Deep ice-pick, boxcar and tethered scars need other treatments, such as subcision, Morpheus8 or laser resurfacing, often combined with peels. See how to get rid of acne scars and our guide to depressed acne scars.

Peels for darker skin tones

People with medium and darker skin can have chemical peels safely, but stronger peels carry a higher risk of dark patches, and occasionally light patches, as skin heals. The safest approach is a light peel or a depigmentation peel, started gently, with skin prepared beforehand and strict sun protection after. Your provider should have experience treating darker skin; see our guide to Fitzpatrick skin types.

Who should wait or avoid a peel

• Anyone with active cold sores, sunburn, broken skin or an active rash on the face.
• Anyone who has taken isotretinoin (Accutane) recently. Ask your provider how long to wait.
• Pregnant or breastfeeding patients should ask first, because some peel ingredients are not advised.
• Anyone who gets cold sores should tell their provider; an antiviral can prevent a flare after a peel.
• Stop retinoids and exfoliating acids a few days before your peel, or as your provider advises.

Our peels at Glow Theory

Every peel starts with a skin consultation, where our medical aesthetician chooses the peel and strength for your skin type and goals, and tells you whether your skin needs preparing first. After your peel, follow our guide to skin care after a chemical peel.

Chemical peel cost in Carlsbad

Glow Getter VIP members pay less: the Glow Signature Peel is $170 for members. New clients get 15% off their first facial (deeper peels excluded).

Chemical peels in Carlsbad

Our dermatology-led studio on El Camino Real in South Carlsbad offers peels for dark spots, melasma, acne and texture, alongside lasers and medical dermatology when pigment needs a closer look. See chemical peels in Carlsbad or book a consultation.