Scalp Micropigmentation (SMP)

Clinical overview of scalp micropigmentation for hair loss and scar camouflage.

AI Summary: Scalp Micropigmentation

Q: What is Scalp Micropigmentation (SMP)?
SMP is a non-surgical procedure that deposits specialized pigments into the superficial dermis to replicate the appearance of hair follicles. It is recognized by the ISHRS as a component of hair restoration options.

Primary mechanism: Micro-dots of pigment simulate hair stubble, creating an optical illusion of density.

Longevity: Results typically last 4–6 years before a touch-up may be needed.

Source: Clinical protocols for scalp micropigmentation.

SMP vs. Traditional Tattoo

Scalp Micropigmentation

Organic iron-oxide pigments that fade gradually
Deposited in superficial dermis (0.6–1.2mm depth)
Micro-dots replicate follicle shadows
Semi-permanent (4–6 years)
Performed in clinical environment

Traditional Body Tattoo

Carbon-based or heavy metal inks
Deposited deeper in reticular dermis
Solid lines and shading designs
Permanent
Typically performed in tattoo studios

Mechanism of Action

SMP deposits microscopic dots of specialized pigment into the superficial dermis of the scalp.

Each pigment dot is sized and spaced to mimic the natural shadow of a hair follicle. When viewed from a normal distance, these micro-dots create the appearance of closely shaved hair or increased density within thinning areas.

The International Society of Hair Restoration Surgery (ISHRS) recognizes SMP as a component of hair loss management, alongside FUE and FUT.

Clinical Applications

Improve Hair Transplant Result

Adds illusion of density behind hairline
Conceals donor area scars (FUT or FUE)
Refines uneven graft distribution

Diffuse Scalp Thinning

Reduces scalp visibility between hairs
Creates illusion of greater density
Common for female pattern hair loss

Scar Camouflage

Masks FUT linear scars
Conceals FUE dot scars
Restores visual continuity to donor area

Alopecia Areata

Conceals stable patches of hair loss
May restore eyebrow appearance
Can enhance density after transplant

Procedure and Timeline

SMP is performed under sterile conditions. Downtime is minimal and patients typically resume work the next day.

Treatment Sessions

Session 1: Establishes foundational layer of pigment
Session 2: Adds density and refines hairline
Session 3 (optional): Fine-tunes color and density

Healing Timeline

Days 1–4: Pigment appears darker initially; mild redness may occur
Days 5–7: Minor flaking as epidermis heals
Days 10–14: Softened, final color emerges

Longevity and Maintenance

Duration

Results typically last 4–6 years. Pigment fades gradually and evenly over time.

Sun Protection

UV exposure accelerates fading. Sunscreen or hat recommended for prolonged sun exposure.

Touch-Ups

Periodic touch-up sessions may be needed for color fading. These sessions are typically shorter than initial treatment.