7.2 Finger Waves & Pin Curls

Finger Waves: Sculpting the S-Wave

Finger waves are a classic wet-styling technique in which damp hair is shaped into a series of S-shaped waves using only a comb, the fingers, and setting lotion. No heat, no chemicals, and no rollers are used — the wave is created purely by manipulating the hair while it is wet and letting it dry in the shaped position. Finger waves are a hallmark of 1920s and 1930s styling and remain common today for vintage looks, short bobbed hair, and slicked finishes.

Hair Condition and Product

For a finger wave to hold, the hair must be:

• Very wet with a setting lotion or wave lotion — wetter than for a roller set. The product provides the light hold needed to keep the wave in place as it dries.
• Short to medium length and free of tangles. Long hair can be finger-waved but requires more anchoring.
• Free of oils and styling buildup so the lotion can penetrate evenly.

The 'C' Shaping and Ridge Formation

A finger wave is built from two repeating elements:

1. The 'C' shaping — a half-circle arc formed by pressing the hair with the fingers while combing the hair in the opposite direction. The comb and fingers move in opposing directions, creating the curved shape.
2. The ridge — the raised line where two opposing 'C' shapes meet. The ridge is the visible wave line that gives the style its characteristic S pattern.

The stylist alternates the direction of the 'C' shaping down the head: first shaping a wave in one direction, then reversing the comb and fingers to shape the next wave in the opposite direction. The result is a continuous S pattern running across the head.

Direction of Waves

Waves can be directed:

• Toward the face — a soft, face-framing look common in vintage sets.
• Away from the face — a sleeker, swept-back finish.
• Alternating — waves change direction across the head for an asymmetric, dramatic effect.

Because finger waves use no heat, they are gentle on the hair and rely entirely on hair memory. The hair must dry completely in the shaped position before the stylist combs or touches the waves, or the hydrogen bonds will reset in an unwanted shape.

Pin Curls: Flat Circles Pinned to the Scalp

Pin curls are formed by taking a small subsection of damp hair, shaping it into a flat circle against the scalp, and pinning it in place until dry. Like finger waves, pin curls use no heat and rely on the hair drying in the shaped position to hold the curl. They produce defined curls without rollers and serve as both a finished vintage style and the foundation for more complex sets.

Anatomy of a Pin Curl

A pin curl has three parts that the exam tests directly:

1. Base — the section of scalp the curl sits on. The base shape determines how the curl anchors and how much lift it gives.
2. Stem — the hair between the base and the circle; it controls the direction the curl opens.
3. Circle — the wound coil of hair that becomes the finished curl once dry.

Base Shapes

Direction: Clockwise vs Counter-Clockwise

A pin curl is wound in one of two directions, viewed from where the curl sits against the scalp:

• Clockwise — the hair is wound in the same direction as the hands of a clock.
• Counter-clockwise — the hair is wound in the opposite direction.

For a balanced set, the two directions are mirrored across the center part: clockwise on the client's right side, counter-clockwise on the left (or vice versa). A set wound entirely in one direction produces a stacked, wave-like finish rather than defined individual curls.

Pinning and Drying

Pin curls are secured with single-prong or double-prong clips placed across the circle (not through it), to avoid leaving a clip line in the finished curl. The hair is dried completely — either under a hood dryer or by air-drying — before the pins are removed. As with all wet setting, removing pins from damp hair produces frizz and loss of curl.

When to Choose Pin Curls

• Vintage sets — pin curls are the authentic method for 1940s and 1950s finishes.
• Short hair without enough length for rollers — the hairline and nape can be curled where a roller would not fit.
• Foundations for updos and dress work — the pre-set curl pattern gives the stylist shaped hair to work from.
• Fringe and face-framing pieces — small pin curls give tight, controlled curls at the hairline.

Step-by-Step: A Single Pin Curl

1. Part a small, clean subsection in the chosen base shape (square, triangle, or arc).
2. Apply setting lotion to the subsection.
3. Comb the hair smooth in the chosen direction.
4. Shape the hair into a flat circle against the scalp, winding in the chosen direction (clockwise or counter-clockwise).
5. Pin across the circle with a single-prong or double-prong clip.
6. Repeat across the head, mirroring direction on each side.
7. Dry completely under a hood dryer.
8. Remove pins gently, in reverse order of placement, and comb out as desired.