Forehead wrinkles on an over-40-year-old man

I've always looked younger than my age (turned 41 in April), but in the last couple of years I've slipped a bit in this regard. One of the ways in which I've started to look more my age is with forehead wrinkles. I have a couple that have been around for a few years, but they only recently started to become more noticeable, due in part to extended time out in the sun (including an 18-month stint overseas, working in South America and SE Asia), and also due in part to weight loss (one of the few areas in which overweight people have an edge over normal-weight folks). Men, when did your forehead wrinkles start letting their presences be known? What, if anything, are you doing to slow the process, other than the usual recommendations (use sunscreen, eat and sleep right, don't smoke)? I've heard that applications of both coconut oil and Vitamin E help. Thanks in advance for your responses.

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