If the extensions are wavy or curly, use a curling iron to curl your natural hair. If the extensions are pin-straight, then use a flat iron to achieve the same sleek appearance. Protect your hair from the potential damage of hot styling tools by applying a dime-sized amount of a heat-protecting product like Argon oil prior to styling.

If your hair is very thin, use a comb to gently tease the lower half of your hair in one-inch sections. This will help keep the extensions securely in place.

Some clip-in hair extensions come in one large piece, while others come in multiple smaller pieces. If you are using multiple clip-ons, then attach them one-by-one, making sure that you evenly distribute them along the part in your hair. If your clip-on is one large piece, then start by fastening the upper row of clips near your part, eventually working your way down to the lower clips near the nape of your neck.