INFLAMED VS NON-INFLAMED ACNE LESIONS EXPLAINED

NON-INFLAMMATORY ACNE LESIONS

Non-inflammatory acne lesions occur when follicular filaments become clogged, forming micro-comedones. These are embryonic acne lesions that can develop into two distinct types: open comedones (blackheads) and closed comedones (whiteheads).

OPEN COMEDONES

Open comedones, commonly known as blackheads, form when cellular debris and oil clog a sebaceous follicle. As more cells become impacted in the lesion, the surface opening dilates from internal pressure. The impaction then pushes its contents to the surface, which gets exposed to environmental air, becomes oxidized and gains a characteristic dark color.

Common Locations: T-zone, cheeks, hairline, ears and torso

Visual Characteristics:

• Enlarged pore opening
• Dark impaction visible at the surface
• Contents exposed to environmental air
• Primarily composed of melanin

CLOSED COMEDONES

Closed comedones, or whiteheads, develop when dead skin cells rapidly accumulate and become impacted. This causes the lesions to enlarge and stay closed while dead skin cells accumulate inside. The cavity of the follicle can't dilate properly, which means the backup of dead skin, melanin, triglycerides and bacteria has nowhere to go.

Common Locations: T-zone, cheeks, jawline and torso

Visual Characteristics:

• Small, closed opening at the surface
• Dead skin cells accumulate inside
• Unable to discharge contents
• White or flesh-colored appearance

INFLAMMATORY ACNE LESIONS

Inflamed acne occurs when the wall of the follicle breaks down. This breakdown can be triggered by stress, hormones, follicular pressure, picking and irritants. Once the follicle wall is compromised, the body's inflammatory response kicks in, leading to four distinct types of inflamed acne lesions.

PAPULES

Papules are small, solid lesions raised above the surface of the skin. They form from a reaction deep within the follicle to sebum, fatty acids, bacteria and trapped epithelium. These red, inflamed bumps don't contain visible pus but are tender to the touch.

Common Locations: Face, torso, upper arms, legs and wrists

Visual Characteristics:

• Red and inflamed

• Solid (no visible pus)

• Raised above the skin surface

PUSTULES

Pustules normally begin as papules but soon dissolve into a liquid substance. They're pus-filled lesions raised above the surface of the skin. The white or yellow center you see is the body's immune response at work, collecting white blood cells and dead bacteria.

Common Locations: Face, back, shoulders, chest, armpits, palms and soles of feet

Visual Characteristics:

• Inflamed
• Filled with pus (white or yellow center)
• Raised above the skin surface

NODULES

Nodules are similar to papules but larger and deeper. Like pustules, nodules are formed from a reaction within the hair follicle. These painful lesions extend further into the skin layers and can persist for weeks or even months.

Common Locations: Chin, jawline, forehead, back, chest, neck, buttocks and groin

Visual Characteristics:

• Red and inflamed
• Large, solid lesions
• Deep within skin layers

CYSTS

All cysts are secondary comedones, meaning they develop from existing acne lesions into walled sacs or pouches that form when several follicles break down and merge. Cysts are the most severe form of acne and can cause significant discomfort and scarring.

Common Locations: T-zone, jawline, neck, back, chest, buttocks and behind the ears

Visual Characteristics:

• Red discoloration
• Large, fluid-filled sacs
• Soft to the touch

THE LASTING IMPACT OF INFLAMMATION

Unmanaged inflammatory acne can leave lasting scars. When inflammation damages deeper skin layers, the body produces collagen to fight it—but this process isn’t always perfect. Too much collagen creates raised scars, while too little leads to depressed scars like ice pick, boxcar or rolling scars. Inflammation can also cause post-inflammatory hyperpigmentation (PIH), leaving dark spots behind.

That’s why early intervention is so important. Addressing inflamed acne quickly can significantly reduce the chances of scarring and discoloration, helping your clients maintain clearer, healthier skin over time.

WHY DOES ACCURATE IDENTIFICATION MATTER?

Non-inflammatory lesions respond better to exfoliation and extraction, while inflammatory lesions require a gentler and more soothing approach. This is just one reason why it's so critical to know the difference between inflammatory and non-inflammatory acne.

Active inflammation also has contraindications for certain modalities like microdermabrasion, chemical peels, physical exfoliants or microneedling. Performing these services on inflamed skin can spread bacteria and increase the risk of scarring. Always assess your client's skin thoroughly before proceeding with any treatment.

THE RIGHT INGREDIENTS FOR EVERY STAGE

Selecting the right ingredients is essential for supporting your clients' skin at every stage of their acne journey. Here's a breakdown of what works best for each lesion type.

NON-INFLAMMATORY LESIONS

1. Papain/Papaya Enzymes: Facilitate a deep cleansing of the follicular opening, assist in removing trapped secretions and provide anti-inflammatory benefits

GlyMed+ recommendation: Hydrating Masque with Enzymes, Skin Clarifying Masque

2. Beta Hydroxy Acids (e.g., Salicylic Acid): Break down bonds between worn-out cells, enhance the penetration of other acne products and oxygenate tissue

GlyMed+ recommendation: Purifying Cleanser with Salicylic Acid, Exfoliating Cleanser with Salicylic Acid, Astringent No. 2

3. Retinol: Stimulates skin renewal by increasing mitotic cell division, boosts collagen and elastin production and breaks up cellular impaction in the acne follicle

GlyMed+ recommendation: Retinol Rejuvenation Serum

4. Resorcinol: Potentiates desquamation of non-nucleated epithelial tissue, promotes faster outcomes for acne skin and slows oil production

GlyMed+ recommendation: Skin Resurfacing Lotion with Resorcinol

INFLAMMATORY LESIONS

1. Aloe Vera and Arnica: Provide a protective layer that inhibits infection, soothes and hydrates the skin and offers anti-inflammatory and antimicrobial properties

GlyMed+ recommendation: Recovery Cream with Arnica, Comfort Cream with Aloe Vera

2. Hyaluronic Acid: Preserves tissue hydration, facilitates wound support and transports nutrients to cells

GlyMed+ recommendation: Ultra Hydro Gel

3. Niacinamide: Provides topical anti-inflammatory properties, is safe and effective for moderate inflammatory acne and supports barrier function

GlyMed+ recommendation: Atraxi Peptide

4. Benzoyl Peroxide: Reduces bacteria and fatty acids in the skin, penetrates deep into pores and causes desquamation and loosening of impactions.

GlyMed+ recommendation: Clear Skin Cleanser with Benzoyl Peroxide, Blemish Control No. 5

5. Sulfur: Controls bacteria, works as a peeling agent and loosens comedones by flaking off the follicle wall

GlyMed+ recommendation: Mattifying Sulfur Masque

6. Oxygen: Clears deep impactions by disrupting the anaerobic (oxygen-free) environment where Cutibacterium acnes thrives.

GlyMed+ recommendation: Oxygen Deep Pore Masque

POST-INFLAMMATORY CONCERNS

1. Vitamin C: Protects skin cells from UV-related damage, promotes collagen production and reduces hyperpigmentation

GlyMed+ recommendation: Vitamin C Cleanser, Vitamin C Cream, Vitamin C Serum

2. Lactic Acid: Diminishes the cohesion of surface skin cells, unroofs pustules and initiates desquamation

GlyMed+ recommendation: Accelerator Gel with 20% Alpha Hydroxy Acids

3. Tyrosinase Inhibitors: Lessen discoloration associated with acne, lower risk of post-inflammatory hyperpigmentation and brighten overall skin tone

GlyMed+ recommendation: Daily Skin Clarifier, CBD Regenerative Eye Cream

TAKE YOUR ACNE EXPERTISE TO THE NEXT LEVEL

Understanding the difference between inflamed and non-inflamed acne lesions is just the beginning. When you can confidently identify lesion types, select appropriate ingredients and guide your clients through their acne journey with knowledge and care, you become an invaluable resource.

Ready to expand your professional knowledge and access pharmaceutical-grade products that deliver real results? Become a GlyMed+ Pro today and join a community of skincare professionals dedicated to exceptional client outcomes.