Microneedling and PRP: What to Expect, Risks and Downtime

Microneedling is a procedure in which a device with many fine needles makes tiny, controlled punctures in the skin, triggering a natural repair process that builds new collagen. It is used mainly for acne scars, uneven texture and enlarged pores, and PRP, made from your own blood platelets, is used mostly for hair thinning and sometimes combined with microneedling for scars.

Both procedures are popular in India, partly because they suit brown skin better than many heat based treatments. Both also come with realistic limits. Results are gradual, need several sessions and vary from person to person.

How does microneedling work?

The micro injuries created by the needles trigger the wound healing response. Over the following weeks, the skin produces new collagen and elastin and remodels scar tissue. This is why microneedling is also called collagen induction therapy.

Because microneedling does not use heat to remove skin, the outer layer stays largely intact. That is the main reason it carries a lower risk of pigmentation on darker skin than ablative lasers, though the risk is not zero.

Microneedling is commonly done with a motorised pen device in a clinic. Some devices add radiofrequency energy, which introduces heat and needs extra caution on brown skin.

What can microneedling help with?

• Atrophic acne scars, particularly rolling and shallow boxcar scars. Deep, narrow ice pick scars respond less and may need other techniques.
• Uneven texture and enlarged looking pores.
• Stretch marks, with modest improvement in some people.
• Fine lines, as part of a rejuvenation plan.
• Hair thinning, as an add on to medical treatment, to support scalp treatments.

Microneedling is not a treatment for active acne and is usually postponed until breakouts are controlled. Read our guide to acne scar treatment options to see how it compares with peels, lasers and subcision.

What is PRP and how is it done?

Platelet rich plasma is prepared from a small sample of your own blood.

1. Blood is drawn from your arm, similar to a routine blood test.
2. It is spun in a centrifuge to separate the platelet rich part.
3. The concentrated plasma is injected into the scalp or skin, or applied during microneedling.

Platelets contain growth factors that are thought to support tissue repair and hair follicle activity. Because PRP comes from your own body, allergic reactions to it are unlikely, though the procedure still has risks.

Does PRP work for hair loss?

PRP is most studied for androgenetic alopecia, the common pattern of hair thinning in men and women. A 2025 systematic review found generally positive effects on hair density and thickness, but noted that results vary widely because preparation methods, platelet concentrations and treatment schedules differ between clinics and studies.

PRP is not a cure, and it works best alongside treatment of the underlying cause. Hair loss from thyroid problems, iron deficiency, stress or medicines needs those causes addressed first. Our guides to hair fall in women and male pattern baldness explain the full picture.

How do microneedling and PRP compare?

Feature	Microneedling	PRP
Main uses	Acne scars, texture, pores, stretch marks	Hair thinning, sometimes scars with microneedling
How it works	Controlled micro injury, collagen remodelling	Concentrated growth factors from your blood
Typical course	Around 3 to 6 sessions, about 4 weeks apart	A series of sessions, then maintenance as advised
Discomfort	Mild to moderate, numbing cream usually used	Injection discomfort, scalp tenderness
Downtime	Redness 1 to 3 days	Usually a day of tenderness
Pigment risk on brown skin	Low to moderate, depends on depth and aftercare	Low
Results	Gradual over 3 to 6 months	Gradual over several months, variable

What should I expect on the day?

Microneedling: the face is cleansed and a numbing cream is applied for a period before treatment. The device is passed over the skin in sections. You will feel vibration and a scratchy sensation. Pinpoint bleeding is normal. A soothing serum or the PRP itself may be applied afterwards.

Scalp PRP: after the blood draw and preparation, the scalp is cleaned and the plasma is injected in small amounts across the thinning areas. Some clinics use cooling or numbing to reduce discomfort.

What is the downtime and aftercare?

After microneedling:

• Redness and a sunburn like feel for 1 to 3 days, sometimes mild swelling.
• Dryness and light flaking over the next few days.
• Avoid makeup for about 24 hours, unless your doctor advises otherwise.
• Avoid retinoids, acids and scrubs for several days.
• Use a gentle cleanser, simple moisturiser and strict sun protection.
• Avoid swimming, saunas and heavy sweating for a day or two.

After PRP:

• Mild tenderness, swelling or a headache for a day.
• Avoid washing your hair for the period your doctor advises, usually several hours.
• Avoid hair dye and chemical treatments for a few days.

What are the risks?

Microneedling risks include:

• Post inflammatory hyperpigmentation, especially with deep treatment, picking or sun exposure. Read more about dark spots after inflammation.
• Infection, if hygiene is poor or skin is touched with dirty hands afterwards.
• Acne flares and milia.
• Track marks or scarring with incorrect technique.
• Reactions to products applied on freshly needled skin.
• Reactivation of cold sores.

PRP risks include pain, bruising, swelling, headache, and rarely infection at injection sites.

Who should avoid microneedling or PRP?

• Active acne, infections, cold sores or open wounds in the area.
• A history of keloids or abnormal scarring.
• Recent oral isotretinoin, until your dermatologist advises it is appropriate.
• Flaring eczema, psoriasis or rosacea in the area.
• Pregnancy, when elective procedures are usually postponed.
• Bleeding disorders, low platelet counts, or use of blood thinners, especially for PRP.
• Uncontrolled diabetes or conditions that impair healing.
• Active cancer treatment, or blood cancers, for PRP.

Always tell your doctor about all medicines, supplements and health conditions before booking.

Why not use a derma roller at home?

Home rollers are widely sold online, but they cannot be sterilised properly, blunt quickly and tear the skin rather than puncture it cleanly. Rolling too hard or too often can cause infection, pigmentation and scarring, and applying strong serums on rolled skin can trigger reactions. Clinical microneedling is done with sterile, single use needle cartridges and controlled depth.

How soon will I see results?

Collagen remodelling is slow. After microneedling, skin may look smoother and brighter within a week or two because of mild swelling, but true scar improvement builds over 3 to 6 months after a course of treatment. With PRP for hair, any change in shedding or density is usually judged after several months. Taking standard photos in the same light before each session helps you and your dermatologist track progress honestly. Results vary, and no procedure can guarantee a particular outcome.

When to see a dermatologist

See a dermatologist if:

• You have acne scars and want to know which treatment, or combination, suits your scar type.
• You are noticing hair thinning and want to understand the cause before considering PRP.
• You have had pigmentation, infection or scarring after a previous procedure.
• You have keloids, a bleeding disorder or are on regular medicines and want to know whether a procedure is safe for you.

A dermatologist will examine your skin or scalp, explain realistic expectations and decide whether microneedling or PRP fits your situation. If you would like to discuss your concerns first, you can book an online consultation with Dr. Maria Ansari.