Boots has a hair oil that has an almost perfect rating from more than 1,000 shoppers. Kérastase Elixir Ultime L'Huile Originale Hair Oil costs £27.50 for a 30ml bottle.

Suitable for all hair types, you simply apply two to four pumps depending on hair length throughout the lengths and ends of dry or towel-dried hair then style as desired. It contains French camellia which is said to be good for 'nourishing, softening and illuminating' hair.

The hair oil gets a 4.7 star rating from more than 1,000 reviews. One happy shopper said: "This is my holy grail hair oil. I tried others but I go back to it."

Another added: "I have very wavy hair and it works wonders for me!" A third said: "Best serum I have ever used. Well worth the money. I can see my hair instantly looking better."

A fourth agreed: "Really made a difference to my hair. So much shine." However, one was disappointed: "Unfortunately, it didn’t do anything for my hair. So glad I didn’t buy the bigger version to waste more money."

Boots describes the hair oil as follows: "The refillable Elixir Ultime oil. Combined with wild camellia, our French camellia is delicately harvested by hand in Brittany and consciously selected for its nourishing, softening and illuminating power. Encapsulated into our precious Elixir Ultime, the singular camellia is gently extracted by a unique cold process to preserve its properties.