In summary. While both 0.25mm and 0.5mm derma rollers activate the hair regrowth response, the 0.5mm penetrates more deeply to directly target the hair follicles. For most, this increased stimulation translates to faster thickening when managed carefully.
Using a dermaroller can help treat hair loss and can be incorporated into any hair growth routine. I recommend using needles between 0.25 mm to 0.5 mm, sanitizing before and after use and using gentle pressure only. Apply a hair growth treatment like minoxidil immediately afterwards for better results.
If hair is sparse, such as in men who have lost their hair and have shaved the remainder off, use of 0.25 mm to 1.0 mm rollers are considered the best option. the micro needling procedure led to significantly greater hair regrowth than minoxidil alone.
You must prefer a size range between 1.0 to 1.5 mm as these microneedles perfectly puncture the scalp and increase hair growth. You must always go for a derma roller with a curved handle that will facilitate a proper grip to massage the scalp properly.
For scalp microneedling, you often see needle lengths of 0.5mm to 1.5mm, although you should leave the longer lengths to the professionals. 0.5mm is a good starting point for scalp microneedling at home when done carefully.
Best for Hair Growth: Act & Acre .
According to certain studies, using a derma roller on the scalp regularly can support hair growth and boost scalp health—and this tool from Act & Acre is specifically created with this beauty benefit in mind.
Which dermaroller size is best for hair growth? An older study found that a dermaroller with 1.5 mm needles effectively promoted hair growth in combination with triamcinolone acetonide . However, most dermarollers available online have 0.25-0.5 mm needles.
If you have 0.5 mm needles and can tolerate their regular use, you can use your derma roller on thinning and balding areas weekly. Ease your scalp into tolerating the derma roller by doing it less often at the start. Over time, you can use your derma roller once or twice weekly to get the best results.
Shorter needle lengths between 0.25mm and 0.5mm will assist with the absorption of topicals into the scalp tissue. The needles need to be longer to reach the dermis where the hair bulb reside. The best results are seen with derma rollers containing needle lengths of 1.5mm or more.
Clinical studies have indicated that the optimal needle depth for microneedling is typically 1.5mm. This depth allows the needles to penetrate the dermis, accessing a greater supply of blood capillaries, which triggers a potent inflammatory response.
The main difference is depth of penetration - a 0.25mm roller needles penetrate the epidermis only, while a 0.5mm reaches the dermis layer. For hair growth, the 0.5mm roller stimulates the papilla more effectively but also poses more risk of injury if handled roughly.
For first-time users or those with sensitive skin, a 0.25mm to 0.5mm needle length is recommended. This provides gentle exfoliation without going deep into fragile skin.
For most individuals seeking to promote hair growth through microneedling, a 0.5 mm needle length derma roller is generally considered more effective than a 0.25 mm option.
For treating acne and other scars as a routine, a needle length of 1.5–2 mm is usually used. When microneedling is used as a procedure to treat ageing skin and wrinkles, the needle length of 0.5 mm or 1.0 mm is usually recommended.
Needles larger than 1.5mm aren't usually necessary, especially for home use. Needles measuring 0.6mm may be the most effective size for treating hair loss [4]. While 0.6mm isn't a common commercial size, 0.5mm derma rollers are widely available.
0.5mm derma roller
This needle length is slightly longer and can penetrate the skin more deeply. It may provide more stimulation to the hair follicles and could be more effective for hair regrowth, but it may also be more uncomfortable for some people.
However, it's crucial to follow the correct timing and procedures to avoid irritation or unwanted side effects. Most experts recommend waiting for at least 12-24 hours after dermarolling before applying minoxidil to allow your skin time to heal and reduce the risk of irritation.
A 0.5 mm derma roller has shorter needles, making it more gentle and suitable for beginners or those with sensitive scalps, while a 1.0 mm derma roller has longer needles that can create deeper micro-injuries, potentially leading to more significant hair growth stimulation but also carrying a higher risk of discomfort ...
Aloe vera gel is a natural soothing agent that can help to calm and repair the scalp after Dermarolling. It's rich in vitamins and minerals that can help to promote healthy hair growth and reduce inflammation.
The most common side effects of topical minoxidil application are redness and irritation of the skin. Rarely, patients have reported headaches, palpitations, and dizziness. Oral minoxidil side effects include palpitations, dizziness, low blood pressure, chest pain, headaches, and swelling of the legs.
Platelet-rich plasma (PRP) injections are gaining popularity for a variety of conditions, from sports injuries to hair loss. The treatment uses a patient's own blood cells to accelerate healing in a specific area.
Frequency of Treatment
There isn't an evidence-based consensus on how often to do microneedling for hair loss. Some studies recommend doing it once a week, while others have found results with monthly sessions. Multiple sessions are generally required.
Yes, it does! Many benefits come with micro-needling especially in treating hair loss. Studies have shown that it's an effective treatment for alopecia because it helps stimulate collagen production and can help trigger stem cell production in the hair follicles. Thus, increasing hair regrowth.