SUN PROTECTION GUIDE

How to Choose and Use Sunscreen Correctly

Sunscreen is one of the most important parts of a daytime skincare routine. Learn what SPF means, what broad-spectrum protection means, how much sunscreen to use, when to reapply and how to choose a sunscreen that works for your skin type.

SPF Guide Broad Spectrum Daily Sunscreen Oily Skin Sensitive Skin
SUN PROTECTION BASICS

Why Is Sunscreen Important?

Ultraviolet radiation from the sun can contribute to sunburn, premature skin ageing and other forms of skin damage. Regular sun protection can help reduce exposure to ultraviolet radiation.

Sunscreen is only one part of sun protection. Shade, protective clothing and avoiding intense direct sun exposure can also be useful, particularly during periods of strong sunlight.

For a skincare routine, sunscreen is generally considered a daytime product and is especially relevant when spending time outdoors.

Sunscreen works best as part of a complete sun-protection routine.

Apply sunscreen according to the product directions and combine it with practical sun-protection habits such as shade, clothing and sunglasses when appropriate.

UNDERSTANDING SPF

What Does SPF Actually Mean?

SPF stands for Sun Protection Factor. It is a measure associated with protection against UVB radiation and is used on sunscreen labels to communicate the level of protection under specified testing conditions.

SPF 30

SPF 30 provides a high level of UVB protection when applied correctly and in sufficient quantity.

SPF 50

SPF 50 provides a higher level of UVB protection than SPF 30 under standard testing conditions.

Higher SPF

A higher SPF does not mean sunscreen can be applied once and forgotten. Application amount, coverage and reapplication still matter.

Application Matters

The protection shown on a sunscreen label depends on applying an adequate amount of product as intended during testing.

UVA + UVB

What Does Broad-Spectrum Sunscreen Mean?

Sunscreens can be designed to provide protection against different types of ultraviolet radiation. Broad-spectrum sunscreen is intended to provide protection across both UVA and UVB portions of the ultraviolet spectrum.

When shopping for sunscreen, look beyond the SPF number and check the product label for information about broad-spectrum or UVA protection.

  • SPF primarily communicates the product's UVB protection performance.
  • Broad-spectrum protection addresses both UVA and UVB.
  • Always follow the directions printed on the specific product.
  • Sunscreen should complement other sun-protection measures.
FIND YOUR FORMULA

How to Choose Sunscreen for Your Skin Type

The sunscreen you are most likely to use consistently is often one that feels comfortable on your skin. Texture and finish can therefore be important when choosing between formulas.

Oily Skin

Lightweight fluids, gels and non-greasy lotions may feel more comfortable for oily skin. Look for a finish that does not leave you feeling excessively oily.

Dry Skin

Dry skin may prefer sunscreen formulations that also provide moisturising or conditioning benefits and feel comfortable throughout the day.

Combination Skin

A lightweight sunscreen can be a practical option when different areas of the face have different oil levels.

Sensitive Skin

If your skin is easily irritated, consider a simpler formula and introduce new products carefully. Stop using products that cause persistent irritation.

Acne-Prone Skin

A lightweight sunscreen labelled non-comedogenic may be preferable if you are prone to clogged pores or blemishes.

Dark-Spot Concerns

Consistent sun protection can be particularly relevant when your routine also focuses on the appearance of dark spots or post-blemish marks.

HOW TO APPLY

How Much Sunscreen Should You Use?

One of the most common sunscreen mistakes is using too little product. Sunscreen should be applied generously enough to cover exposed skin according to the product directions.

For the face, a commonly used practical guide is the “two-finger” method, where sunscreen is dispensed along the length of two fingers. However, exact application amounts can vary with product texture, face size and the manufacturer's directions.

01

Apply Enough Product

Use a generous amount rather than applying only a thin decorative layer.

02

Cover Exposed Areas

Remember commonly missed areas such as the ears, neck and other exposed skin when appropriate.

03

Apply Before Sun Exposure

Follow the product's instructions regarding when to apply before going outdoors.

04

Reapply When Needed

Reapply according to the product directions, particularly after sweating, swimming or towel drying.

REAPPLICATION

When Should You Reapply Sunscreen?

Sunscreen can wear away or become less effective after sweating, swimming, towel drying or extended outdoor activity. Reapply according to the instructions on your sunscreen.

If you spend a long period outdoors, regular reapplication is especially important. Water-resistant sunscreen can still require reapplication after swimming or heavy sweating.

Water-resistant does not mean waterproof.

If you swim, sweat heavily or towel dry your skin, follow the sunscreen's reapplication instructions rather than assuming the original application remains fully intact.

COMMON MISTAKES

Sunscreen Mistakes to Avoid

Even a high-SPF product may not provide the expected protection if it is not applied properly or consistently.

Better Habits

  • Apply enough sunscreen to cover exposed skin.
  • Choose broad-spectrum protection.
  • Reapply when required.
  • Use additional protection such as shade and clothing.
  • Choose a formula you are comfortable wearing consistently.

Common Mistakes

  • Using only a very small amount.
  • Forgetting the neck, ears or other exposed areas.
  • Assuming one morning application lasts all day outdoors.
  • Skipping sunscreen because the weather feels cool.
  • Treating sunscreen as a replacement for shade or protective clothing.
COMMON QUESTIONS

Sunscreen Questions, Answered

What SPF should I use?

SPF 30 or higher is commonly recommended for regular sunscreen use. Choose a broad-spectrum product and follow its application instructions.

Is SPF 50 better than SPF 30?

SPF 50 provides a higher level of UVB protection than SPF 30 under standard testing conditions. Regardless of the SPF, applying enough product and reapplying when necessary remain important.

Can oily skin use sunscreen?

Yes. Oily skin can use sunscreen. Lightweight gels, fluids or lotions may feel more comfortable than heavier formulas.

Can sunscreen cause pimples?

Some sunscreen formulas may not suit a particular person's skin. If you are prone to blemishes, you may prefer a lightweight or non-comedogenic formulation.

Should I wear sunscreen every day?

Daily sun protection can be useful when you are exposed to ultraviolet radiation. Follow the directions on your product and consider additional sun-protection measures.

Do I need sunscreen on cloudy days?

Clouds do not completely eliminate ultraviolet radiation. Sun protection can therefore still be relevant on cloudy days, particularly when spending time outdoors.

Can I use sunscreen with other skincare products?

Sunscreen can generally be incorporated into a daytime skincare routine. Apply your other skincare products according to their directions and finish with sunscreen when appropriate.

Does sunscreen help with dark spots?

Consistent sun protection can help reduce additional ultraviolet exposure that may contribute to uneven-looking pigmentation and can be an important part of a routine focused on the appearance of dark spots.

Build a Simple Daytime Skincare Routine

Cleanse, moisturise and protect your skin with a routine that fits your skin type and everyday lifestyle. Explore the NDERMI skincare range and find products suited to your routine.

Explore NDERMI Skincare →