Fluffy blending brush

A fluffy blending brush does one thing better than any other eye brush: it takes an edge away. Its head is long, loose and tapered, a small plume of soft fibres in a round ferrule, and because the fibres stand apart it carries little colour and puts down less than it picks up. Swept back and forth across a line of shadow, it spreads the pigment thinner and thinner at the border until the line has gone. That is how a crease shade melts into the lid, a deep outer corner into the transition shade, and a smudged liner into shadow.

Its neighbours are denser. A domed blending brush packs more fibres into a rounder head, so it places colour as well as softening it; a crease brush is smaller and more pointed, made to lay a line in the socket rather than to dissolve one. The fluffy blender is the loosest of the three and the least precise, which is exactly its use.

Match the size to the eye. A large, loose blender covers the whole socket in a few strokes and suits transition shades and wide lids; a smaller, more tapered one reaches into a deep-set or hooded crease without carrying colour up onto the brow bone. The taper matters as much as the size: a pronounced point puts colour exactly in the socket before the sides of the brush soften it, while a rounder, fuller tip gives a hazier, wider blend.

Softness decides how much the brush moves. The airiest blenders are almost impossible to overdo but slow to build colour; a slightly firmer one blends and deposits at once, which helps where a transition shade has to show, as it often must on deeper skin. Most blenders in the carousel are synthetic, which suits cream shadow as well as powder and washes clean; Anastasia Beverly Hills describes its A10 as natural fibre, a choice for powder. One blender is usually the first eye brush to wear out, and a second, kept clean for the last softening strokes, earns its place before a third brown shadow does.

Care matters more than it does for a dense brush. A loose head that dries bent, or clogged with old shadow, stops spreading colour evenly and starts to drag it. Wash the blender once a week, squeeze it out, reshape the taper between your fingers and leave it to dry lying flat.

Blend light to deep, with an almost empty brush. Put the transition shade in the crease first, sweeping the blender from side to side like a windscreen wiper, holding the handle near its end so that the brush can only brush. Add the deeper shade with a smaller brush, then go back with the blender, clean or carrying only the transition shade, and work the border in small circles and short strokes until it disappears. Look straight ahead into the mirror while you work: an eye seen from below hides the crease you are shading.

The same brush does more than the crease. Run it along the lower lash line with whatever is left on it, to join the lower shadow to the upper; sweep it over the edge of a smudged liner to turn the line into a haze; and use it clean at the very end, over the whole eye, to soften any border the smaller brushes left behind.

Muddiness is the usual mistake. A blender that carries a dark shade into a light one mixes them into grey, so wipe it on a towel between colours, or keep one brush for dark shades and one for light. Hard edges more often mean too much shadow on the brush than too little blending: tap off, and blend with less.

The blended eye is older than the blending brush. Silent film asked for it: a guide for newcomers to the film studios, published in 1921, has the edge of the upper lid lined and the shade then “worked back toward the eyebrow, getting constantly lighter, until it finally blends with the grease paint of the face”. Helena Chalmers, writing on make-up for stage and screen in 1925, named the tool: “Blur and blend it with a finger until you have a shaded portion darkest at the edge of the eyelid and fading off towards the eyebrow.” The finger was not the only way. A photograph of the actress Pola Negri making up in 1922 appears to show her taking colour from a palette of four with a brush.^[1]

At the dressing table the finger lasted longer. Advice published by the cosmetics house Richard Hudnut in about 1937 was to apply eye shadow “with your finger (most girls like the little finger for this)”, as close to the lashes as possible, “and blend it over the lid”.^[2]

Nothing read for this article dates the moment a loose, tapered brush took that work over. But the gradient those instructions describe, darkest at the lashes and fading to nothing below the brow, is exactly what a fluffy blender is sold to make: the aim of the 1920s, pursued with a tool that can be washed between one colour and the next.