04/24/2026
Some education on microneedling. Deeper or redness doesn’t always mean better treatment.
Did you know❓
Most people treat the forehead the same as the rest of the face… and that’s where they go wrong.
Let’s talk about it 💜
The forehead is one of the thinnest areas of the face.
The epidermis here is extremely thin — around 0.08–0.12 mm — often compared to clingfilm.
Now just imagine that…
This means you reach deeper layers of the skin much quicker than you might think.
Unlike areas such as the cheeks, the forehead has very little underlying fat or muscle padding. It sits much closer to bone, which is why treatment here can often feel more sensitive or “bony” compared to other areas.
So what are we actually treating here?
• fine lines
• mild texture
• early signs of ageing
You’ll often hear that 0.5 mm is where collagen stimulation begins.
And that’s true as a general guide — as it allows you to reach the upper dermis where fibroblast activity is triggered.
But here’s where people get confused…
That doesn’t mean every area of the face needs the same depth.
The forehead reaches deeper layers more quickly due to its thin structure and lack of cushioning.
So even when using the same setting, the skin will not respond the same way everywhere.
In practice, the forehead often responds well at more superficial to moderate depths, depending on the concern being treated.
• Around 0.25–0.3 mm is commonly used for superficial work, glow, and improving skin condition.
• Around 0.5 mm is often used when a more consistent dermal response is required.
Going deeper than this on the forehead is rarely necessary and can increase irritation without adding additional benefit, as you are approaching the deeper structural layers much faster in this area.
This is also why technique matters:
• lower speed improves control on a bony surface
• light, even pressure prevents unnecessary trauma
• stretching the skin helps reduce “bounce” on the bone
• precision matters more than depth alone
The key point?
Depth should never be applied uniformly across the face.
The forehead is a perfect example of why.
— Nina
This is a simplified educational visual to help understand relative skin layers and depth placement — not a precise anatomical measurement diagram.
