Lisa Eldridge Elevated Glow Highlighter (£27) is one of makeup artist Caroline Barnes's favourite lightweight makeup products to use during the summer. Available in four shades — Crystal Nebula, Cosmic Rose, Solar Light, and Celestial Fire (shown here) — the liquid highlighter is a makeup/skin care hybrid as it contains glycerin, tamarind indica seed, oat kernel extract, and a biopolymer complex that has an instantaneous lifting and smoothing effect on the skin. Tap onto the high points of the face like a highlighter, or add a few drops before makeup as a very luminising primer — the more you layer on, the more shimmery the pearlescent pigments become.