How to Choose a Pastel Hair Colour Based on Your Skin's Undertone

Lundqvist said that for those with golden undertones, finding the perfect balance between warm and cool colours is crucial to not washing you out.

Have fair skin? "Going for an ashy or very cool colour can end up washing out the complexion and colours that are too warm can end up bringing out too much yellow in the skin," she said. "The key is to have a colour which is a little more neutral such as a peachy pink."

If you have a medium skin tone, "this complexion can take a more saturated colour. A slightly more vibrate pink, like rose, looks beautiful."

For darker skin tones, try a more saturated shade of pink. "An acidic fuchsia pink looks striking," she said. "Deeper skin suits hair with a stronger hue but these colours should be cool or neutral as a saturated, warm colour will highlight the golden tones in the skin making the hair loose it's dimension."

Lundqvist noted that olive skin tones can often have warm or cool undertones, meaning that preciseness of the shade is essential.

For pale and cool undertones, try "a warmer colour such as soft lavender," she said. "It is a beautiful contrast, where a sky blue will be a lovely compliment to the cooler tones."

A pastel shade can be trickier to match for the pale and warm undertone complexion. "A warm peach or rose gold works well but be careful not to go too cool as this is where pastels can start to wash you out."

Medium and cool undertones suit, "richer colours like the dramatic eclipse blue look amazing on medium, olive skin tones."

"Tangerine orange is a fantastic, or this season's turmeric copper is incredibly flattering on an olive, warmer skin tone, it brings out the warmth but doesn't "match" the skin tone."

Deep and warm undertone complexion can take "strong, warm and saturated colours so the fiery orange-red is a great choice."

"Reds are also very flattering for olive, deep and cool undertones but unlike those with warmer tones, the red should be very rich, an aubergine or plum shade would look very luxe."

For pink skin tones Lundqvist explained that finding the perfect pastel can be a little more difficult . Using a bright colour is often too much of contrast, and can end up bringing out too much pink. If you do want to go a pastel colour, using a technique such as colour-blocking is a great way to wear a bolder colour without it looking too intense against the skin tone.

Iridescent tones work to subdue pink so a strawberry blonde works really well for a more pale skin tone.

"An all-over pastel will probably not be very flattering to this medium and deep pink tone. The colour is too much of a contrast and brings out the underlying pink in the skin, making it look incredibly rosy. But this doesn't mean you can't get creative with your hair. A colour bleed at the end is a great way of introducing colour as it is not framing the face."

For cool, neutral skin tones, Lundqvist noted that "as we get older our skin and hair looses melanin as our bodies stop producing it as much. This can result in some skin tones having a more neutral colouring. This generally only happens to those who fall into the pale category."

Naturally warming up the more pale complexion is "key when choosing a colour, this season's corn blonde would do this giving the skin an effortless glow. If you do want to still try the pastel trend opt for an oyster shade with a touch of warm pink to bring out any underlying yellow."

Lundqvist explained that dark complexions tend to have peachier undertones and take pastel colours beautifully. Similarly to olive, these undertones can be either cool or warm.

Antique gold, peach, wine rose shades compliment the more pale and warm tone perfectly.

This seasons lilac rose is the perfect shade for those with the slightly more pale and cool colouring. "A mellow pink infused with warm lilac creates a playful shade that compliments the cool undertones without highlighting them."

"Those with a medium to deep and warm, peachier colouring can wear very saturated pastels starting at the medium level. This season's aspen gold is a pure and joyful colour which adds a hint of luxury to the pastel look, it's highly saturated, so great for those with very peachy, darker skin."

"Really saturated, cooler colours like aqua blue or royal blue work as they compliment the medium to deep cooler tones but are also very vivid. Going for a cooler colour doesn't just limit you to blues though. Colours have undertones so a cool red such as fire red would also have the same effect."