Keratin Plugs in Hair Follicles

What are keratin plugs?

Keratin plugs are small blockages that form when excess keratin, sebum, and dead skin cells accumulate inside the opening of a hair follicle. Keratin is a natural protein that makes up your skin, hair, and nails, but when too much is produced or not shed effectively, it can clog follicles and harden into a plug.

These plugs are sometimes confused with dandruff flakes, scalp acne, or ingrown hairs, but they are a distinct scalp issue.

How do they form?

Keratin plugs occur when the normal process of skin shedding (desquamation) is disrupted. Instead of dead cells being released, they become trapped and combine with oils and debris in the follicle.

Common contributing factors include:

• Keratin overproduction (genetic tendency or skin conditions like keratosis pilaris, psoriasis)
• Sebum imbalance – either excess or thickened oil secretion
• Inflammatory scalp conditions – seborrheic dermatitis, psoriasis, folliculitis
• Poor scalp hygiene or heavy product use leading to buildup
• Slower cell turnover (common with age, stress, hormonal shifts, or certain medications)

Symptoms & signs

To the naked eye:

• Small, firm, skin-coloured, white, or yellowish bumps on the scalp
• Rough, bumpy texture when running fingers across the scalp
• Sometimes mistaken for pimples or hardened dandruff flakes
• Can be tender, itchy, or asymptomatic

Under a trichoscope:

• Compact, dense keratin material sitting within the follicular opening
• Follicle may appear blocked, sometimes widened
• Surrounding erythema (redness) if inflammation is present
• In chronic cases → follicle miniaturisation or hair shaft fragility around the plug

How do you know if you have keratin plugs?

If you notice persistent bumps or blocked follicle openings that don’t wash away with shampoo, you may have keratin plugs. Trichoscopy or dermatological examination provides confirmation, especially if there is confusion with other conditions like scalp psoriasis, folliculitis, or seborrheic dermatitis.

Treatment & management

1. Chemical exfoliation
   
• Salicylic acid: oil-soluble, penetrates the follicle to break down plugs
• Glycolic or lactic acid: speeds up skin cell turnover and loosens buildup
• Apple cider vinegar rinses: natural, mild exfoliation + pH balancing
  
2. Mechanical exfoliation
   
• Scalp brushes or exfoliating masks with gentle particles
• Should be used sparingly to avoid micro-trauma
  
3. Barrier support
   
• Hydrating shampoos with beta-glucan, ceramides, or pentavitin
• Soothing botanicals like chamomile, aloe, or sea buckthorn
4. Topical solutions
• Avoid heavy waxes or styling products that build up on the scalp
• Keep a consistent cleanse + care routine
• Address underlying scalp conditions with targeted treatment
  
5. Professional intervention
   
• If plugs are widespread, inflamed, or associated with hair loss, dermatology or trichology assessment is recommended. Prescription treatments may include retinoids, keratolytic shampoos, or medicated scalp care.

Home scalp care

1. Boar Bristle Brush to lift buildup between washes
2. Trichobarrier to balance scalp environment and calm inflammation
3. Rejuvenate Dust to gently exfoliate buildup around follicles
4. Reinforcement increase circulation to support the bodies natural healing process
5. Revitalise Serum calm and soothe follicles and hydrate the scalp

Trichological overview

Keratin plugs are small but important signs of scalp imbalance. While not dangerous, they can contribute to irritation, follicle stress, and even hair shedding if left unmanaged. Regular exfoliation, a balanced scalp routine, and professional guidance when needed will keep your follicles clear and your scalp healthy.

Unsure on your scalps health? Reach out to our clinically certified trichologist to help guide you to optimum scalp and hair health