A wig covers the whole head, while extensions add length or fullness to particular areas. Start with the result you want, then consider attachment, sizing and the care routine you can manage. Product photographs alone cannot show how comfortable a piece feels or how well its fibres behave.

Coverage and attachment method

Separate full wigs from crown toppers, ponytail pieces and individual extension wefts. Clips make added hair removable, but need enough existing hair to hold without pulling. Tape, adhesive and semi-permanent bonds involve fitting, removal and regular checks that should be discussed with someone trained in the relevant attachment method.

Check which pieces are supplied and where each one attaches.
Pain, pulling or irritation is not a reason to tighten the attachment.

Cap measurements and fit

Measure around your head using the manufacturer's specified route and compare its size chart, rather than relying on small or medium labels. Adjustable straps only cover a limited range. A lace front can soften the visible hairline, while seams and ventilated areas affect how the cap rests against your scalp.

Check circumference, temple coverage and the position at the nape.
Find out whether the front requires trimming or preparation before wear.

Synthetic fibres, human hair and heat

Synthetic hair often retains its original style, although restyling options depend on the fibre. Human hair requires a different care routine and is not automatically tangle-free. Use heated tools only if the manufacturer explicitly permits them and gives usable limits. Colouring or bleaching likewise needs instructions specific to the supplied hair.

Look for washing, drying and detangling guidance for that material.
Heat-resistant does not mean suitable for every temperature or styling tool.

Length, fullness and colour matching

Check how length is measured: a curl measured stretched can look considerably shorter when worn. With extensions, piece count and total weight help explain fullness, but extra weight also loads the attachment points. Compare roots, mid-lengths and ends with your own hair in similar lighting, taking highlights and texture into account.

For fine hair, consider whether the attachment points remain concealed.
A physical colour sample is more useful than a heavily edited photograph.

Care routine and replacement accessories

Allow for a suitable comb, drying stand and compatible care products. Detangle gently and avoid putting the piece away damp. Check whether clips, tapes or straps are replaceable and whether replacements fit that particular base. If your scalp is sensitive or damaged, seek advice before using adhesives or persistent attachment systems.

Store the piece without crushing its style or stretching its joins.
Remove and clean attachments as directed, without improvising with solvents.