Tape-in hair extensions are a type of hair extension that uses thin tape wefts, which are typically 1 to 1.5 inches wide, that get "taped-in" in between your own hair in "sandwich" like bonds. This method is 100% natural, requires no tools or chemicals.  Here's a bit more detail about them:
 
Installation
The installation process involves taking a section of your own hair and applying one tape-in hair extension above it and one below it, creating a sandwich. The adhesive tape on the extension is usually a medical-grade adhesive that is safe for skin and hair. Ascension Extensions tape-in come in 40pcs (100 grams) per pack, finer hair would typically need 1-2 packs and thicker hair would need 3-5 packs. (Consult with your Stylist for recommendations, number of packs needed will vary.)
 
Appearance and Maintenance
Tape-in extensions blend seamlessly with your natural hair, giving a natural and voluminous look. They require maintenance every 4-6 weeks, depending on hair growth and care, where the extensions are removed and re-applied closer to the scalp. Proper care includes using specific shampoos and conditioners that don't interfere with the adhesive, as well as avoiding oils and silicone-based products near the tape.
 
Benefits
Quick and easy to apply: Much faster than sew-in, micro-link, and fusion extensions.
Reusable: With proper care, tape-in extensions can be reused multiple times.
Less damaging: They are lightweight and do not pull on your hair like other extensions, reducing the risk of hair damage.
Seamless: They lay flat against your head, making them virtually undetectable.
 
Tape-in extensions are a popular choice for those looking to add length and volume to their hair without the commitment or damage associated with other types of hair extensions.  It's important to have tape-in extensions applied by a professional stylist to ensure they are placed correctly, look natural, and do not damage your hair. Proper aftercare is also crucial to maintain the health of your natural hair and the longevity of the extensions. Tape-in extensions offer a balance between durability, ease of application, and a natural look, making them a popular choice for those looking to add length and volume to their hair without the commitment of more permanent extension methods.