The term 'Bygone Hair Removal Brand' can be solved by the four-letter word 'Neet'. Neet was a popular hair removal brand in the early 20th century. It was known for its easy-to-use cream formula and its ability to remove unwanted hair quickly and effectively. Neet was one of the first brands to introduce a hair removal product specifically designed for women. The brand was eventually discontinued in the late 1960s, but it remains a fondly remembered part of beauty history.