Lace-Front Wigs
These days, most wig wearers wear lace fronts, which are units that include human or synthetic hair that's sewn (usually by hand) to a sheer piece of lace. The end result is a more natural-looking hairline that often looks like the hair is actually growing out of your scalp. (These can be glued above the hairline, though some are made to be glueless.) That said, lace-front wigs can also be on the more expensive side because of their quality, so buying them is definitely looked at as more of an investment for a lot of people.
Synthetic Wigs
Synthetic wigs are normally made up of, you guessed it, synthetic hair. Unlike lace-front wigs, these can't be dyed, heat styled, or manipulated, and they're usually meant to be worn exactly how they're bought. The advantage of this is that synthetic wigs can usually be bought at significantly cheaper prices than lace fronts, and you can typically buy one either online or at your local beauty supply store for as little as £20.
Image Source: Getty / Allen Berezovsky