Skip to content

Does Sunscreen Prevent Tanning? The Complete Truth You Need to Know

5 min read

You applied sunscreen before stepping out, followed everything, and yet came back with a tan! Frustrating, isn’t it? You are not alone. There are many who go through this everyday, especially in countries like India where one gets exposed to sunlight almost the whole year round. The key point here is that does sunscreen help prevent tanning, and if yes, then how come you have been tanned?

Let’s break it down honestly, clearly, and completely.

What Actually Causes Tanning?

In explaining how sunscreen blocks tanning, one needs to first have a basic understanding on how tanning occurs.

Skin exposure to UV rays from the sun is said to be damaging to the skin. Therefore, the body produces melanin to protect the inner layers of the skin. The higher the exposure, the more melanin will be produced, leading to tanned skin.

A tan is not a glow. It is your skin sending you a distress signal.

There are two types of UV rays responsible for this:

  • UVB rays — cause surface-level tanning and sunburn
  • UVA rays — penetrate deeper, causing dark spots, pigmentation, and premature ageing

Both types make your skin darker. Both need to be blocked. This is why understanding how sunscreen works is essential.

Does Sunscreen Prevent Tanning? Here’s the Honest Answer 

Indeed, sunscreen does stop tanning from happening, but only partially. This is how it works.

A sunscreen acts by forming a barrier film on top of the skin, which either absorbs or blocks the ultraviolet rays from penetrating your skin cells. Since there is no activation by the ultraviolet rays, your skin does not send any signal to generate extra melanin. Consequently, your skin remains unchanged.

However, there are no sunscreens on Earth that can stop 100% of the ultraviolet rays. This is what an SPF is capable of doing:

SPF LevelUVB Rays Blocked
SPF 15~93%
SPF 30~97%
SPF 50~98%
SPF 100~99%

Even with a high SPF value like 50, 2 percent of the sun rays will be able to penetrate your skin. After a whole day outside, this percentage of the sun will definitely affect your body. This means that even when you use sunscreen, you are not fully protected from tanning.

It is just like an umbrella, which shields you from the rainwater, except that sometimes the winds may still drench you a bit.

Can Sunscreen Protect You from Tanning? Only If You Use It Right

It is at this point where most individuals fail. Can one use sunscreen as a means of avoiding tanning? Yes indeed, although this will depend on whether or not the product is used properly. Here are some of the mistakes that most individuals commit:

1. Not Using Enough Amounts

The ideal amount of sunscreen to use would be half a teaspoon for the face and neck alone. This is the minimum requirement, although most individuals use less than this, even by up to half. If there is inadequate application, the strength of the sunscreen will be greatly reduced, for example SPF 50 may act like SPF 10.

2. Failing to Apply Again

Sunscreen does not last all day. Sweat, humidity, and sun exposure break it down. You need to reapply every 2 hours, especially if you are outdoors or sweating.

3. Neglecting Specific Regions

The regions that one often neglects are the back of one’s neck, ears, hands, and the areas near the hairline. These regions tend to darken quickly.

4. Using the Incorrect Type of Sunscreen

It is important to know that if your sunscreen does not indicate “broad-spectrum” in addition to its SPF rating, it will only protect you from UVB rays. UVA rays, just like UVB, cause darkening of the skin. Ensure that your sunscreen is SPF 50 with a PA+++ or PA++++ label.

Do Sunscreens Prevent You Getting Darker? What Else You Can Do

The question here is whether sunscreen prevents tanning. Yes, it does help, but only in conjunction with other measures. So, here are some tips that actually work:

  • Do not step into the sun when the intensity of UV rays is highest – this is usually between 10 AM and 4 PM. If you have to, cover yourself with clothes, scarves, or a hat.
  • Hydration. Hydrated skin is healthy, heals better after sun damage, and retains its skin color for longer.
  • Exfoliate your skin 2–3 times a week. Tanned skin accumulates layers of dead skin cells. Exfoliation will help to clear the dead cells from your skin, thus preventing tanning.
  • Combine chemical and physical sunscreens. Using sunscreen along with full-sleeved clothes or scarves will protect you better against tanning than using just sunscreen.
  • Apply sunscreens even while inside. UVA rays can penetrate even glass windows. You skin will get damaged by those rays even if you are not stepping outside during daylight hours.

Can Sunscreen Remove an Existing Tan?

Not at all. Sunscreen stops further development of the tan. But it can’t eliminate a current tan.

For fading a tan that has already formed, products that contain vitamin C, niacinamide, and AHAs that will slowly lighten and slough off tanned, dead skin cells would be required. Exfoliation plays an important role in this as well.

However, this is where the really crucial thing needs to be pointed out. In order to fade the tan, daily application of sunscreen is absolutely necessary. Otherwise, your tan will just come back due to new UV exposure.

Sunscreen is essential. Without it, everything else will fall through the cracks.

Key Takeaways

  • Does sunscreen block tanning? Yes, to a great extent but not entirely. There is no SPF that blocks all UV light.
  • Can sunscreen block tan? Yes, only if it is used in the correct amount and applied repeatedly along with being broad-spectrum.
  • Can sunscreen help you avoid tanning? Definitely yes, particularly when combined with avoiding exposure at certain times and exfoliating your skin.
  • Does sunscreen stop your skin from tanning? Yes, definitely but you have to be consistent with application because you may lose all effects by skipping just a day or two.

The reason why the skin remains uniform among users of a certain sunblock lotion and those who tan despite application of the lotion is usually because of wrong usage.

Usage is the most critical factor when it comes to sunblock lotions; use the right way, and the sunblock will work perfectly.

Also Read

FAQ.

Suma Angari

I’m Suma Angari, Founder of SkinGlowRoutine.com and an SEO Executive passionate about digital marketing and skincare. I share SEO tips, blogging ideas, and natural skincare guides to help you grow online and glow naturally.

View All Articles