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Murmura Encyclopedia

In pursuit of the truth behind what is in our skincare products, Murmura has debunked cosmetic ingredients and treatments. Providing all of the information you need to make informed decisions when choosing a product that’s right for your skin.



What is it?

A serum is a formula packed full of active ingredients that have molecules that are so small, they can penetrate deeply into your skin. They are more concentrated than essences, but less so than ampoules and are incredibly effective for targeting dry, acne prone and aging skin.

How does it work?

Serums deliver targeted results which make skin appear firmer and smoother. Since serums are highly concentrated with active ingredients, they can only moisturise to a certain extent, therefore it’s important to use them in combination with a moisturiser.

Using serums in your skincare routine can make a remarkable difference, as the small molecules that serums are made from not only penetrate deeper into your skin but get absorbed more effectively.

They are brimming with high levels of anti-aging ingredients which your cleansers and moisturisers simply couldn’t hold. So if you feel your current skincare products aren’t packing the punch, it’s time to find a serum that’s right for you.

What serum is best for your skin?

With an overwhelming choice of face serums available, we’re here to help you choose which one addresses your skin concerns.

Dry Skin

For dry skin, look for a serum with active ingredients that can repair dry skin whilst locking in moisture. These are the key ingredients you should look for: -

Hyaluronic Acid – Retains moisture in your skin, locking in water

Found in           Cosrx Hyaluronic Acid Intensive Cream

Glycolic acid – Provides a gentle exfoliation to remove dead skin cells

Found in          Cosrx Natural BHA Skin Returning A-Sol

Niacinamide – Increases levels of ceramide in the skin that help strengthen bonds between skin cells, meaning less chance for them to break down, become damaged or dry out.

Found in         Shara Shara Honey Bomb All-in-One Ampoule

Acne Prone or Oily Skin

Here are some of the best active ingredients to look for and some examples of these acne fighting serums that can also help balance the oil production in your skin.

Retinol – Reduces inflammation while acting as an antioxidant, to get rid of all of the nasty bacteria lurking in our pores.

Found in         Missha Time Revolution Night Repair New Science

Vitamin C – Balances oily skin through gentle and natural exfoliation.

Found in       Klairs Freshly Juiced Vitamin C Serum

Tea Tree Oil – This plant based oil won’t block your pores like other oils might and helps to prevent breakouts with its antibacterial qualities. 

Found in      LJH Tea Tree 90 Essence

Wrinkle Prevention

Get ahead of the game and slow down the effects of time on your skin with a night time serum. Allowing your serums to work during the night enables your skin to better repair itself while you sleep. Look for serums that contain Retinol as this will plump up any fine lines that are developing and help prevent skin ageing.