Freckles look amazing with any summer makeup. People who naturally don’t have freckles can use several products to get them temporally.
Use brown eyebrow pencil or brown matte eyeshadow to scatter dots chaotically onto your face. Tap with your fingertip to blend them out.
Use natural henna (test before applying), put some dots on your face, let dry for one hour, remove henna.
Use self-tan. Dip stippling brush into the tan, dab over your face, leave for a few hours, rinse.