Sun Exposure After Laser Hair Removal

One of the biggest rules of laser hair removal is to avoid sun exposure before and after treatment. But staying completely out of the sun can be difficult… Especially when you have smooth skin to show off! 

So in this guide, we dive deep into the reality of post-treatment sun exposure: Why you should avoid it, how to protect your skin while still enjoying time outdoors, and what to do if you do end up experiencing post-treatment exposure. 

How Long Should You Avoid Sun Exposure After Laser Hair Removal?

You should avoid sun exposure for at least two weeks after laser hair removal. That said, ideally, you should keep your skin protected throughout your treatment journey. 

There is nuance here, though. You don’t need to become a hermit — just practice common-sense sun avoidance by wearing sunscreen or UPF-rated clothing over the treated areas, seeking shade, and staying indoors during peak UV hours. 

Understanding Sun Exposure Risk

To effectively protect your skin, it helps to understand how sunlight damages the skin. Sunlight contains ultraviolet (UV) radiation, with two main types of rays that attack your skin in different ways: UVB and UVA. 

The level of UV radiation changes throughout the day and from day to day, with peak UV hours typically between 10 AM and 4 PM. 

UVB rays have shorter wavelengths, so they mostly hit the outer layer of your skin. These rays directly damage the DNA inside your skin cells, causing intense cellular inflammation. This direct genetic damage is what triggers sunburn and is the primary cause of skin cancer.

UVA rays have longer wavelengths, so they penetrate much deeper into the lower layers of your skin. UVA rays mostly cause harm by creating oxidative stress, a destructive chemical reaction that breaks down collagen, leading to premature aging and wrinkles. Unlike UVB, UVA rays easily pass through clouds and glass windows, meaning your skin is at risk even on an overcast day or while you are driving.

Normally, your skin defends itself from UV rays by making melanin, the pigment that creates a tan. All tanning is a sign of photodamage. 

As the FDA warns, “Evidence suggests that tanning greatly increases your risk of developing skin cancer. And, contrary to popular belief, getting a tan will not protect your skin from sunburn or other skin damage.”

Why Your Skin Is Sensitive to Sunlight After Treatment

Your skin is more sensitive to sunlight after laser hair removal because it is slightly inflamed post-treatment. This makes it potentially more susceptible to sun damage. 

Laser hair removal intentionally heats and damages the hair follicles to stop hair growth. This process causes temporary inflammation, leaving your skin a little more vulnerable than normal. 

When UV rays hit already sensitive skin, the cellular damage is multiplied. Your skin can essentially panic and overproduce pigment, potentially resulting in stubborn dark patches known as post-inflammatory hyperpigmentation.

Sun Exposure Before Laser Hair Removal

It’s very important to avoid sun exposure to the treatment area for two weeks before laser hair removal — in fact, it’s potentially more important than avoiding it after treatment. Laser treatments can only be performed on healthy, intact skin. 

Any sun damage or pigmentation changes within the two weeks before treatment can increase the risk of burning, blistering, swelling, and post-inflammatory hyperpigmentation from laser hair removal.

Risks of Sun Exposure During Your Laser Hair Removal Journey

Sun exposure before and after laser hair removal can increase the risk of burns, blistering, and irritation. 

UV exposure also raises the chance of post-inflammatory hyperpigmentation, which may appear as dark patches after treatment. Once pigmentation changes develop, they can be slow and difficult to treat, sometimes requiring clinical treatments such as topical lightening agents or in-office procedures.

Protecting treated skin from the sun also helps reduce ongoing photoaging and other UV-related skin damage. 

Choosing the Right Post-Treatment Sunscreen 

The best sunscreen is simply the one you’ll wear every single day. 

If you dislike how a sunscreen feels or you think it’s too expensive, you won’t apply the recommended amount. That can leave your treated skin insufficiently protected. 

From a medical standpoint, you need a broad-spectrum formula with an SPF of 30 or higher to block UV rays. Make sure to reapply sunscreen if in the sun for a prolonged period of time. 

If you are prone to dark spots or conditions like melasma, recent dermatological research shows that visible light can also trigger melanin production. To combat this, dermatologists recommend sunscreens that contain iron oxides, which are usually found in tinted formulas. 

Beyond that, there are other ways to protect yourself, such as wearing a wide-brimmed hat and UPF-rated clothing and staying indoors or seeking shade when UV radiation is high. 

What to Do if You Experience Sun Damage or Dark Spots

If you do experience sun exposure, sunburn, or develop a tan or hyperpigmentation, take gentle care of your skin, protect yourself from further sun damage, and consider rescheduling your next laser appointment. 

First, stop further sun exposure by staying indoors or keeping the area covered. Next, focus on calming the area. Treat a mild sunburn by cooling the skin with water or cold compresses and applying gentle, fragrance-free moisturizers or pure aloe vera. 

Avoid any harsh active ingredients like retinoids or chemical exfoliants while your skin is sensitive, which will only worsen the irritation.

You must inform your provider about the exposure before your next treatment. If your next laser appointment is less than two weeks away, reschedule so you can give your skin time to recover. 

If you experience persistent hyperpigmentation, there are both topical products and professional treatments such as laser facials for hyperpigmentation that can help even your skin tone. You may need to take a break from such products or treatments for 1-2 weeks before getting laser hair removal. 

Important note: If you’ve developed a severe sunburn with symptoms such as significant blistering or a fever, seek medical treatment immediately. 

Schedule Your Laser Hair Removal at SEV

Sun exposure after laser hair removal can put you at an increased risk of skin damage, so it’s always best to reduce your risks through great sun protection. This is most important two weeks before and after your laser hair removal treatment. 

But sun protection doesn’t have to be difficult: 

• Use sunscreen on the treated area when going outside
• Wear UPF clothing or a hat 
• Seek shade or stay indoors at peak UV hours

The sooner you start getting laser hair removal treatments, the sooner the results will show in the form of smooth, stubble-free skin. 

And at SEV, you can get treated by laser specialists who’ll ensure your treatment is safe, comfortable, and easy to fit into your routine. Book your very first treatment for free at your near SEV location.