Blue light – the invisible enemy of your skin. How to protect yourself?

Blue light is a natural part of daylight and helps us stay alert and focused during the day. However, excessive exposure to blue light, especially from the screens of electronic devices, can have a negative impact on our health—particularly sleep quality and eye health, as well as the quality and health of our skin. Blue light can cause premature skin ageing, hyperpigmentation, loss of elasticity and disrupt the skin’s protective barrier. Manufacturers of Korean and Japanese cosmetics are responding to this issue by developing products that contain ingredients that protect the skin from the negative effects of blue light.

How to protect your skin?

• Cleansing: Start with a gentle cleanser that removes impurities and prepares the skin for the next steps.
• Hydration: Use a serum or essence with antioxidants, such as niacinamide or centella asiatica extract.
• Something extra: Your skin also deserves extra care—apply a face mask and relax.
• Nourishment: Treat your skin to a high-quality face cream.
• Protection: Apply an SPF cream daily that contains mineral filters or ingredients that protect against blue light.
• BB cream: If you wear make-up, choose a BB cream with protective ingredients.

Which cosmetic ingredients protect the skin against blue light?

• Niacinamide (Vitamin B3) improves the skin’s barrier function, reduces pigmentation, regulates sebum production, soothes irritation and supports hydration. Thanks to these properties, it strengthens the skin barrier and helps neutralise free radicals caused by blue light.
• Ectoin is known for its strong protective and hydrating effect, protecting cells from stress and damage. This ingredient protects skin cells from oxidative stress caused by blue light and inflammatory reactions.
• Green tea is a powerful antioxidant that soothes the skin, reduces inflammation and fights ageing. It neutralises free radicals and protects the skin from oxidative stress caused by blue light.
• CICA (Centella Asiatica) regenerates the skin, supports healing, soothes irritation and improves elasticity. It strengthens the skin barrier, helping to protect the skin from environmental stress, including blue light.
• Vitamins C and E are powerful antioxidants that support skin regeneration, reduce pigmentation and improve elasticity. They neutralise free radicals and protect the skin from oxidative stress caused by blue light.
• Lutein is an antioxidant that protects the skin from damage and supports its health. This ingredient absorbs blue light and protects the skin from its harmful effects.
• Astaxanthin is among the strongest antioxidants, fighting ageing and inflammation. It neutralises free radicals caused by blue light and protects cells from damage.
• Ceramides strengthen the skin barrier, improve hydration and protect the skin from moisture loss. A strengthened barrier helps protect the skin from external influences, including blue light.
• Algae extracts, such as spirulina, are rich in antioxidants, hydrate and soothe the skin. They protect it from oxidative stress and support cell regeneration.
• Ferulic acid is a powerful antioxidant that stabilises vitamins C and E and increases their effectiveness. It neutralises free radicals and protects the skin from damage caused by blue light.
• Moringa seed oil hydrates, regenerates and protects the skin from pollution. It contains antioxidants that help protect the skin from oxidative stress.
• Probiotics and fermented ingredients support a healthy skin microbiome, improve hydration and soothe irritation. The healthy skin barrier supported by these ingredients helps protect the skin from harmful influences, including blue light.
• Hyaluronic acid intensely hydrates the skin, improves its elasticity and smooths wrinkles. It indirectly protects the skin by keeping it hydrated and improving its overall resilience to stress factors.

We have selected a few products you might like to try

• Beauty of Joseon Relief Sun: Rice + Probiotics - a lightweight sunscreen contains probiotics and rice extract, which protect the skin from UV radiation as well as blue light. 
• Missha M Perfect Cover BB Cream - this iconic BB cream provides not only coverage, but also protection against blue light thanks to zinc oxide and niacinamide. It also hydrates and improves skin elasticity.
• COSRX Galactomyces 95 Tone Balancing Essence – an essence with niacinamide and fermented ingredients.
• Purito Galacto Niacin 97 Power Essence – a brightening essence with niacinamide.
• Dr. Jart+ Cicapair Tiger Grass Color Correcting Treatment – a cream with centella to soothe the skin.
• SKIN1004 Madagascar Centella Ampoule – an ampoule with a high concentration of centella.
• Klairs Freshly Juiced Vitamin Drop – a serum with vitamin C.
• Etude House SoonJung 2x Barrier Intensive Cream – a ceramide cream for sensitive skin.
• Purito Pure Vitamin C Serum – a serum with ferulic acid and vitamin C.
• Skin79 Waterproof Sun Gel SPF50+ PA++++ - a waterproof sun gel with strong protection against UV radiation.
• HADA LABO Face Gel Gokujyun Firming All in One Gel - a nourishing face gel with anti-ageing effects.
• HADA LABO Hydrating Face Cream Melano CC Vitamin C Moisture Cream - a lightweight hydrating face cream for pigmentation spots and uneven skin tone.
• HADA LABO Facial Toner Gokujyun Aging Care Firming Lotion - a hydrating facial toner against skin ageing.

More suitable productsn can be found below the article.

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Finally, we will also look at ways to protect yourself overall from the harmful effects of blue light and minimise its impact on our health.

Use blue light filters - most modern devices, such as smartphones, tablets and computers, offer a blue light filter function. This function reduces the amount of blue light emitted by the screen and shifts the tone to warmer colours. Activate this function especially in the evening, when it is important to prepare the body for sleep.

Wear blue light blocking glasses - special glasses with a blue light filter are a great choice for those who spend long hours in front of a screen. These glasses help reduce eye strain and improve sleep quality by blocking harmful blue light.

Limit electronics use before bed - one of the most effective ways to reduce exposure to blue light is to limit the use of electronic devices at least an hour before bedtime. Instead, read a book, meditate or relax in another way.

Follow the 20-20-20 rule - to protect your eyes during prolonged screen use, it is a good idea to follow the 20-20-20 rule. Every 20 minutes, look at an object at least 20 feet (about 6 metres) away for 20 seconds. This reduces eye strain caused by prolonged focusing on close objects.

Consider using light management apps - there are apps that automatically adjust brightness and colour temperature on your device according to the time of day.

Ensure proper lighting in the room - using the right lighting in the room can help reduce eye strain. Avoid overly bright lighting and use warmer light sources, especially in the evening.

Take care of your eyes - take regular breaks while working on the computer and stay hydrated. If you feel your eyes are dry, you can use eye drops. Also, do not forget regular check-ups with an eye doctor.

Support the natural sleep cycle - blue light disrupts the production of melatonin, the hormone that regulates sleep. That is why it is important to support the natural sleep cycle by spending more time in daylight during the day and minimising exposure to artificial light in the evening.

Blue light is part of modern life, but excessive exposure can have negative effects on our health. By following the tips above, you can protect your eyes, improve sleep quality, skin health and reduce fatigue. Start with small changes and gradually build habits that help you minimise the harmful effects of blue light.