But when it comes to permanent blow-dries there’s a surprising air of caution in the ELLE office. Testers who claimed to hate their curls were soon backing out of trying the permanent blow-dry for fear their curls would never come back.

But now is the season where these lasting blow-dries really come into its own; on holiday you won’t need to worry about humidity wreaking havoc on your curls or laboriously styling your hair every evening in humid climates. Hair dries into a professional blow-dry every time. Now what’s so scary about that? We sent three brave testers to trial these miracle blow-dries and find out exactly what all the fuss is about.

Click here to read more about permanent blow-dries...