In recent years, microneedling has become a skin care method favored by more and more people. Derma Roller is a beauty tool that can be operated at home. It can be used to deal with various skin problems, such as improving acne scars, fine lines, large pores and other skin problems.
But a common question is: "what kind mm is recommended for a derma roller?" This article will explain the method of choosing the length of microneedles from multiple angles, including your skin condition, application site, safety, frequency and other dimensions, to help you start the microneedle skin care journey scientifically and safely.
What is Derma Roller?
Derma Roller is a roller device with many tiny needles. Its function is to pierce the skin with needles when rolling on the surface, making some tiny wounds on the surface of your skin. These wounds are some minimally invasive channels.
These tiny wounds can stimulate the skin to repair itself, promote collagen production, and improve the penetration of skin care products. Common Derma Roller needle lengths range from 0.2mm to 2.5mm, and different sizes can be selected according to different purposes of use.
It has the following major effects:
- Stimulates your collagen regeneration: minimally invasive stimulation activates the skin's self-repair mechanism and promotes collagen remodeling;
- Enhances your skin care product absorption: opens the skin barrier and promotes deep penetration of essence;
- Improves your various skin problems: such as large pores, acne marks, fine lines, dull skin, sagging skin, etc.;
- In addition to the face, it is also used on the scalp: stimulates hair follicles and helps hair regeneration.
2. Functions and applicable scopes of different needle lengths (mm)
Below are the functions, applicable skin conditions and recommended frequency of use of each commonly used needle length:
| Needle Length (mm) | Applicable Issues | Recommended Areas | Frequency of Use |
|---|---|---|---|
| 0.2–0.3mm | Enhance absorption of skincare products, improve dull skin tone | Whole face | Daily or every other day |
| 0.5mm | Diminish shallow fine lines, large pores, mild acne marks | Cheeks, forehead, nose, etc. | 1–2 times a week |
| 1.0mm | Improve acne scars, rough skin, superficial stretch marks | Face, neck | Once every 2 weeks |
| 1.5mm | Deep acne scars, cellulite, stretch marks | Body areas (e.g., thighs) | Once every 3–4 weeks |
| 2.0–2.5mm | Severe scars, severe stretch marks, body scars | Thighs, abdomen, buttocks | Once a month (professional treatment advised) |
Choosing the Right Needle Length Depend on the purpose of use
1. If you are a beginner or want to improve dull skin tone and poor absorption of skin care products
It is recommended to choose 0.25mm. This length will not really penetrate the stratum corneum of the skin, will not cause bleeding or pain, and is suitable for daily use.
2. If you want to improve large pores, mild fine lines or fade acne marks
It is recommended to use a 0.5mm needle length. This length can penetrate the epidermis to the shallow dermis, activate collagen production, and is relatively gentle.
3. If you have acne scars, depressed scars or stretch marks
It is recommended to use a 1.0mm-1.5mm Derma Roller, but it is recommended to reduce the frequency of use and use repair essence. It is recommended to operate under the guidance of a doctor for more than 1.5mm.
4. Body parts that require deep reconstruction such as stretch marks, burn scars, etc.
It is more appropriate to use a needle length of more than 2.0mm, but this type of microneedle operation must be performed by professionals and is not recommended for home use.
Tolerance of different skin types to needle length
Sensitive skin: It is recommended to use 0.2-0.3mm to avoid discomfort.
Oily skin/skin with large pores: 0.5mm is more suitable, which can improve sebum secretion and pore contraction.
Mature skin/loose skin: 1.0mm is recommended, which can effectively stimulate collagen regeneration.
Severe acne scar skin: 1.5mm or more can be selected, but it is recommended to cooperate with a doctor or beautician to guide the operation.
Precautions for using Derma Roller
Strictly disinfect tools: Before and after each use, the Derma Roller must be thoroughly sprayed and soaked with alcohol.
Cleanse before use: Keep the skin clean to avoid infection.
Operation time control: It is recommended to use it at night to avoid exposure during the day.
Postoperative repair care: Use non-irritating repair essence and avoid alcohol products.
Avoid frequent operation: Excessive use may cause damage to the skin barrier.
Which groups of people are not recommended to use Derma Roller?
Active acne or skin infection
Severe eczema, psoriasis
Pregnant or lactating women (doctor evaluation is recommended)
Anticoagulant users, diabetics
Sensitive areas that have undergone radiotherapy/laser treatment
Recommended essences for use
After microneedling, the skin's absorption capacity is greatly improved in a short period of time. It is recommended to use the following types of essences:
- Dimainy Hyaluronic acid essence: hydration, repair, soothing
- Diaminy Exosome: best skin booster for skin hydration and anti aging.
- Peptide essence: anti-aging, promote collagen synthesis
- Vitamin C essence: whitening, light spot (use with caution for sensitive skin)
- Diaminy Medical repair mask: calming and soothing.
Diaminy Derma Roller 192 - the representative of precision care
Definition:
Derma Roller 192 refers to a roller with 192 evenly distributed microneedles, with optional needle lengths (such as 0.25mm, 0.5mm, 1.0mm, etc.), suitable for small and medium-sized care.
Advantages:
The needles are thicker, more solid, and have strong penetration, which is suitable for people who need dermis stimulation;
Because the number of needles is small, the pain during rolling is less, which is suitable for novices;
It is more suitable for precise care of the face, neck, and small areas;
It is easier to control the strength and reduce skin redness or allergies caused by excessive stimulation.
Diaminy Derma Roller 540 - the first choice
Definition:
Derma Roller 540 refers to a total of 540 microneedles. Compared with 192, the needle body is thinner and more densely distributed.
Advantages:
- The high-density needle array can stimulate the skin more evenly, which is suitable for users who pursue comprehensive repair;
- One rolling covers a large area, and the operation is faster, which is suitable for those with skin care experience;
- Especially suitable for large areas such as cheeks, forehead, back, etc.;
- It is particularly effective in improving the penetration efficiency of skin care products and is often used with essence introduction.
- Suitable for people: Moderate skin problems, such as large pores, dull skin, and obvious acne marks.
Diaminy Derma Stamp
Definition:
Derma Stamp is a "point-pressure micro-needle". It is not a roller structure, but a vertical pressing design. There are a small number of micro-needles on the top to finely treat local skin problems.
Advantages:
- It can be used for areas that are difficult to roll, such as the sides of the nose, scars, and sunken acne pits;
- It can more accurately control the strength and position, suitable for professionals;
- It will not pull the skin due to rolling, and it is gentler on sensitive areas;
- It reduces the epidermal damage that may be caused by roller sliding and reduces postoperative discomfort;
- It is very suitable for scalp care and promotes hair growth.
Suitable for people: People with concentrated acne scars, users of scalp micro-needle hair growth, and people who need precise stimulation.
Conclusin:
Microneedling is a smart and effective way to improve your skin — but only if you choose the right needle length and use it correctly. Different skin concerns call for different derma roller sizes, and when you're using it at home, it's important to keep things safe and gentle.
If you're new to microneedling, it’s a good idea to start with a 0.25mm roller. It helps you get used to how your skin reacts and lets you learn the process step by step. Once you're comfortable, you can adjust the needle length and how often you use it based on your needs.
Looking for a high-quality, medical-grade derma roller? Check out our top recommended brand — Diaminy, to help you achieve smoother, healthier skin.
Start your skincare journey the smart way — shop now and upgrade your routine!
