Erikae - "the turning of the collar"

Erikae :- Is a ceremony where a Maiko (an apprentice Geiko) becomes a Geiko and begins to wear the white collar of a Geiko instead of the red worn by apprentices, Maiko.
Her hairstyle would also be changed to the Shimada worn by older women, from the Ofuku-style. - At the Erikae she began to wear a wig.

Geiko: Term for Geisha in Kyoto.

Shimada: is a women's hairstyle in Japan, similar to a chignon. Its modern usage is mainly limited to Geiko, but during the Edo period it was also worn by ordinary girls in their late teens. Generally the hair is gathered together at the crown of the head and a small portion of the bun is sectioned off to point outward.

Chignon: The word "chignon" comes from the French phrase "chignon du cou," which means nape of the neck. Chignons are generally achieved by pinning the hair into a knot at the nape of the neck or at the back of the head, but there are many different variations of the style. They are frequently worn for special occasions, like weddings and formal dances, but the basic chignon is also worn for everyday casual wear.

Ofuku-style:One indication of the young Maiko's maturity and advancement in status is her appropriation of the more senior Maiko's Ofuku hairstyle when she undergoes a coming of age ceremony known as the Mizuage (its literal translation is hoisting from water) - Ofuku hairstyle takes place at around the Maiko's 18th birthday or three years after the start of her apprenticeship.