It really depends on the amount you're trading, If it's a small amount then sure otherwise, waiting for more confirmation is suggested. Read these posts for a better understanding[1][2][3].

[1] https://bitcointalk.org/index.php?topic=2038365.0
[2] https://www.reddit.com/r/Bitcoin/comments/7j2gp2/whats_the_difference_between_1_confirmation_and_6/
[3] https://www.reddit.com/r/btc/comments/7zsas0/is_one_confirmation_good_enough/