Forehead Lines in Your 20s: Normal or Something to Treat?

Forehead lines in your 20s are common and usually harmless. Most are dynamic expression lines from the muscle that raises your eyebrows, and they show up earlier in people who are very expressive, squint often or have had a lot of sun. They aren't a medical problem. Daily sunscreen, a gentle retinoid and moisturizer are the low-risk ways to keep them from deepening.

Below we explain why some people get forehead lines young, how to tell whether yours are temporary or starting to set in, what actually slows them down, and an honest look at "baby" or preventative Botox, including what the evidence does and doesn't say.

Is it normal to have forehead lines in your 20s?

Yes. Every time you raise your eyebrows, the skin of the forehead folds along the same horizontal creases. In your early 20s those creases spring back the moment you relax. With enough repetition and sun, they start to linger. The American Academy of Dermatology (AAD) explains that repeatedly contracting the same facial muscles for years can make lines permanent. DermNet notes that deep wrinkles are usually found on the forehead and around the eyes, which makes the forehead one of the first places many people notice lines at all.

So a few faint forehead lines at 24 aren't a sign that something is wrong with your skin. They're a sign of a face that moves. Whether they deepen over the next decade depends far more on sun, smoking and skin care habits than on the lines you have today.

Why do some people get forehead lines so young?

A handful of factors stack up, and most of them are things you can see in your own habits.

• Expressive brows. If you talk with your eyebrows, raise them when you're surprised or focused, or lift them to open your eyes wider, you fold the forehead far more often than someone with a stiller face.
• Squinting. Bright light and uncorrected vision make you squint and frown. The AAD suggests sunglasses partly to reduce squint lines, and an overdue eye exam can help too.
• Sun exposure. In a study of 186 pairs of identical twins, increased sun exposure was associated with an older appearance, and a history of outdoor activities and lack of sunscreen use pointed the same way.
• Smoking. The AAD says smoking greatly speeds up how quickly skin ages, and in the twin study, facial wrinkles were more evident in those who smoked.
• Dehydration. Tight, dehydrated skin makes fine lines look sharper. The AAD notes that moisturizing traps water in the skin, which can help reduce the appearance of some fine lines.
• Genetics and skin. Some faces simply line earlier, and you can often see the same pattern in a parent.

How can you tell if forehead lines are permanent?

Look at your forehead with your face fully relaxed. Lines that appear only when you raise your brows are dynamic and fully reversible for now. Lines that stay faintly visible at rest have started to become static. Our guide to fine lines vs wrinkles explains the difference in more detail, but here is the quick version:

Check in daylight from a window, with no makeup, at the same time of day. Evening light and a tired face exaggerate everything.

How do you stop forehead lines from getting deeper?

Protect the skin from sun every day, add a retinoid when you're ready, and keep it moisturized. That's the whole plan, and it costs little.

1. Daily broad-spectrum SPF 30 or higher. The AAD recommends broad-spectrum, SPF 30 (or higher), water-resistant sunscreen on all exposed skin. The strongest evidence for this comes from a randomized trial of 903 adults under 55: those assigned to daily sunscreen showed no detectable increase in skin aging after 4.5 years. Make sure the forehead gets its share, right up to the hairline.
2. A retinoid at night. The AAD says retinoids reduce fine lines and wrinkles, and a 24-week trial on the arm skin of older adults found that 0.4% retinol significantly improved fine wrinkling versus a plain lotion. Start with the gentlest formula, every other night, and build up. Cleveland Clinic suggests a pea-sized amount in a thin layer after a gentle cleanse. Expect several weeks before you see a difference. See retinol for beginners for the first three months.
3. Moisturizer every day. It takes care of the dehydration that makes lines look worse and helps you tolerate a retinoid.
4. Sunglasses and an eye check. Less squinting means less folding.
5. Give it time. The AAD notes that most products take at least six weeks to work, and sometimes three months.

Retinoids are not for pregnancy: the AAD says plainly that retinoids should not be used during pregnancy. If that applies to you, ask your doctor what to use instead. For the rest of a sensible routine at this age, see our skincare routine for your 20s.

Can you get rid of forehead lines without Botox?

You can make fine forehead lines look softer, especially early ones, but topicals won't stop the muscle from folding the skin. Moisturizer can immediately plump up fine lines, which is why lines often look better right after skin care. Retinoids work slowly on texture and fine lines over months. Facial exercises, forehead tapes and patches are popular online, but we couldn't find strong evidence for them in the sources we reviewed, so treat them as optional at best. If a product stings or burns, stop: the AAD warns against using several anti-aging products at once, which can irritate skin and make signs of aging more noticeable.

Is "baby Botox" or preventative Botox worth it in your 20s?

It is a personal cosmetic choice, and the case for it is weaker than social media suggests. Here are the facts we could confirm.

• What it does: the AAD explains that botulinum toxin temporarily relaxes the targeted muscles, which softens the lines above them. "Baby Botox" usually means a smaller dose for a lighter effect.
• How long it lasts: about 3 to 4 months, sometimes longer, so it's an ongoing commitment. The maker of Botox Cosmetic says results may last up to 4 months.
• What it's approved for: Botox Cosmetic is approved for frown lines, crow's feet, forehead lines and platysma (neck) bands in adults. That approval covers treating lines that are there; the maker's site and the AAD pages we read don't describe it as a way to prevent lines from forming.
• Side effects: usually mild, such as swelling, redness, soreness and bruising, but the AAD also lists a temporarily droopy brow or eyelid and, very rarely, more serious effects.
• Who should inject: the AAD recommends a dermatologist and warns against buying the product online or getting injections at spas, parties, salons or someone's home.
• Age: in England it is an offence to give someone under 18 botulinum toxin or filler injections for a cosmetic purpose.

The AAD does say repeat treatment may lead to longer-lasting results for lines and wrinkles. That isn't the same as proof that starting at 23 changes how your forehead looks at 40. If your lines bother you, the most reliable steps are the cheap ones above, and if you still want injections, a consultation with a board-certified dermatologist is the place to weigh it. Nobody needs Botox to have healthy skin.

When should you see a dermatologist about forehead lines?

Forehead lines on their own are cosmetic. See a dermatologist if lines arrive alongside new redness, scaling, a rash, or a spot that's growing or changing, or if you want to talk through prescription retinoids or procedures. A dermatologist can also help if over-the-counter retinoids keep irritating your skin.

How can a selfie scan help you track forehead lines?

Forehead lines change over months, and lighting and expression make them look different every time you check. A consistent photo record cuts through that. Pori takes a selfie, maps your face with a 468-point mesh and reads each region with an AI vision model, returning an overall skin score from 0 to 100 plus a breakdown that includes Anti-aging & Elasticity and Hydration & Moisture. Before-and-after comparisons and progress charts show whether your sunscreen and retinoid habit is changing anything after 8 to 12 weeks. Pori is a free download with a free first scan; Pro costs $9.99 a week or $49.99 a year in the US as of October 2026.

Scan with a relaxed forehead, brows down, in the same light each time; raised brows add dynamic lines that weren't there a second ago. Our explainer on the wrinkle score covers why expressions matter. An app tracks how your skin looks and is not a diagnosis, so anything changing, sore or worrying belongs with a dermatologist.