The Guy’s Grooming Guide for Your 40s

The Guy’s Grooming Guide for Your 40s

It's all in the upkeep
men's grooming guide for your 40s

By Megan Collins | Last Updated: Jan 16 2024 | 7 min read

Want to keep your hair and skin in great shape at every age? Of course you do! Check out this grooming guide for your 40s, and our other guides for your twenties, thirties, and forties...

The good news first. Guys today have cast off most Mad Men-style vices that can age a person prematurely. Except for bourbon. Always say yes to bourbon.

If you’ve been exercising, eating right, and yes, looking after your skin, your forties should be pretty smooth sailing for your face and body. To keep it that way, follow the pointers below.

guys grooming guide for your forties

Below, the guys’ guide to grooming for your 40s to stay looking your best:

1. Whiten Up

You could swear off wine, coffee and cigarettes and still have yellow teeth by now. Thankfully, this is one of the easiest cosmetic problems to fix. You’ve even got your choice of two paths: at-home remedies, or professional care.

Crest 3D Whitestrips, $20

If you’re going the at-home route with teeth whitening strips, be sure to also invest in whitening toothpaste, mouthwash, and floss. This is a real 360-degree DIY situation.

Doing all that will help with upkeep between whitening sessions. Oh, and don’t fall asleep with them on, and don’t use them more than twice a year.

The professional route is faster and gives better results. It’s also pricier, costing around $400-600, depending where you live.

The peroxide gel most dentists use is similar, but more powerful than the stuff you’ll find on drugstore strips, and while it may take more than one session to get the desired look, you get what you pay for.

If you do see a professional, make sure you talk about what kind of white you’re looking for — no one wants to end up with glow-in-the-dark fluorescent choppers. Leave that to Ross on Friends.

2. Hold On To Your Hair

hims hair regrowth treatment

It’s time to take stock of what’s still up top. Now, if you’re one of those blessed dudes with a full head of hair in his forties, you can go ahead and skip this section.

If, however, you’re one of the millions of guys whose hair is thinning at the crown or receding at the hairline, there are some great steps you can take now. 

The most effective treatment is a minoxidil or finasteride prescription.

A few caveats: hair loss treatment is rarely covered by insurance, so expect to pay about $100 a month out of pocket, and 1.5% of guys have complained about ED as a side effect.

RELATED: How long does finasteride take to work?

It’s a small percentage, but a full head of hair only gets you so far if the plumbing’s not working downstairs, so check with your doctor before you start taking anything.

3. Don’t let your eyes give away your age

Sweet Chef Turmeric + Vitamin C Booster Eye Cream

Sweet Chef turmeric + vitamin C eye cream, $18

If circles and puffiness were big eye issues in your thirties, by your forties you’re probably going to contend with wrinkles. That includes crow’s feet (the squinchy wrinkles at the corners of your eyes) as well as folds directly under the eye.

Instead of lighter gels and sticks, this is the time to start using a heavier duty eye serum. You’ll get a serious dose of moisture, sealed in to keep wrinkles in check. Clinique and Lab Series both have solid treatments in this department.

When you’re putting on any kind of eye product, dab it under the eye and on the eyelid, and work it in gently. Since the skin around the eye is some of the thinnest on your body, handle with care.

4. Adjust your skincare routine

paula's choice toner

Paula’s Choice toner, $26

As guys age, their skin tends to get thinner, dryer, and more sensitive. This means the rigorous cleansing regimen you took up in your oily, acne-prone twenties may not be doing you any favors today. If your skin looks flaky or red, cut down on exfoliation and wash your face only once a day.

In the morning, your face shouldn’t be all that dirty (you wash your pillow cases regularly by now, right?!), so it’s better to do this in the evening. You’d be surprised how much grime attaches itself to your skin during a day.

In the AM, then, just wash up with warm water and a washcloth.

Or try using a gentle toner, which is less intense than a normal cleanser but still clears away dirt and oil. Paula’s Choice is especially good for sensitive skin.

5. Drop Some Acid

la roche posay serum

La Roche-Posay Hyaluronic Acid Face Serum, $40

No, not that kind of acid (didn’t you get that phase out of your system in your twenties?) We’re talking about hyaluronic acid, the difficult to pronounce, easy to procure skin-saver that guys pushing forty should all keep close.

This near-magical ingredient works wonders in two ways.

First, it delivers moisture like nobody’s business: one gram of HA can hold up to six liters of water, which is great for guys whose aging skin is drying out. Second, it helps to strengthen the barrier between the outer layers of your epidermis and the environment. That way your skin retains moisture longer, while looking smoother and less craggy.

Hyaluronic acid is one of the hottest products in the grooming market today, so now that you know the phrase, you’ll probably start spotting it everywhere. Look for it in a serum or a moisturizer, and make sure it’s not listed at the end of the ingredients. If it is, it’s probably just a nominal amount, and not actually all that helpful.

Shop #SGapproved products from our grooming for your 40s guide:


A wardrobe that makes you feel like a million bucks boosts your confidence big time, but shopping for all those clothes? Kind of a drain.

If you’re ready to invest in some new clothes for your wardrobe but dread the thought of shopping for them…consider having Team SG shop for you! We can curate an online shopping list just for you that fits your budget, your body type, and your lifestyle.

Let us rescue you from shopping fatigue and sartorial apathy. You’ll receive personal attention and care that will make you feel like the best version of the awesome guy you already are! Ready to seriously improve your closet and your confidence? Give us a shout.


I started Style Girlfriend to help guys look, feel, and act their best.