At times when you go to buy makeup products, you get confused with the undertone meaning. The wrong usage of products can make you look tired. 
Knowing your skin tone and undertone helps you decide what BB, CC creams or foundations you need to buy. It also helps you to determine the eyeshadow and lip colours. 

Skin Tone
You probably already have an idea if your skin tone is light, medium or dark. If no then a good trick is to look at your jawline. This area is less affected by colour changes.
Light –You have light-coloured skin, with yellowish or beige undertones.
Medium - You have medium colour skin, with possible olive undertones.
Dark – You have a deep or darker complexion.

Skin undertones
It is that muted colour that lies underneath your skin. While your skin tone may change due to the sun, your undertone remains the same. This means that you should use your undertone as the basis for choosing your cosmetics.
Cool – more pink, red and bluish tint to the skin
Warm – more yellow, peachy or golden tints to the skin
Neutral – more olive or a mix of the above

What can you do to find out your undertone? 
There are many ways to do this, but the best approach is to try each method to figure out your undertone. The most frequently used answer is your undertone. 

1) Check your veins
Stand in bright sunlight and check the underside of your wrists for the colour of your veins. Bluish or purplish veins mean you have cool undertones, and greenish means you are warm toned. If the colour lies in between these two, you probably have neutral undertones.

2) Do you tan or burn?
When you are in the sun for a long period of time, do you tan or do you burn? If your skin goes a shade darker and you look like a bronze goddess, chances are, that you have warm undertones. If, on the other hand, your skin goes red, you have cool undertones.

3) What colours look good on you?
Blue, purple and emerald green look good with cool undertones and warm undertones look vibrant in Earthy colours like peach, red, yellow, orange and olive-green. If you look good and both these colour palettes look good on you, you probably have neutral undertones. 

4) Try the white test
Wash off all your makeup. Get a plain piece of white paper and another piece in an off-white colour and hold them against your skin. If your skin colour pops against the white paper, you are warm toned. If it pops and looks radiant against the off-white paper, you have cool undertones.

5) Do you like gold or silver jewellery?
Cool undertones look good in silver jewellery and warm undertones look good in gold jewellery. You can check this by holding a gold coloured chain against your skin and a silver coloured chain against your skin.