When I first heard this, I thought "Well, that's an old wive's tale if I've ever heard one!" Then I went for a doctor's visit and out of the clear blue, my doctor started telling me that hair grew faster in the summer! Ok! Have to listen to the expert! Many of my clients come in and tell me that their hair grows faster in the summer, and I believe now that they are right! In an article from the Huffington Post, this is what Elizabeth Cunnane Phillips, a trichologist at the Philip Kingsley Clinic in New York City has to say: “There may be a slight increase in the rate of growth,” says Cunnane-Phillips, “but it’s really marginal. A natural hormonal shift and increase in UV may contribute to some changes, but again I must stress it’s marginal.” Hmmm...coming from someone who has studied hair growth for the past 22 years, I suppose you have to consider what she is saying. She goes on to say: mor? “More highlights and sun oxidation can cause the demarcation between base and scalp to be more apparent than in the winter months,” notes Cunnane-Phillips. “This contributes to the myth.”
So....you be the judge. I don't know, I'm kind of siding with my clients and my doctor. Either way, it's a subject that we are all interested in and have varied opinions about.