
In London, hair extensions are more popular than ever, with clients seeking natural results, longevity, and comfort. Among the options available, keratin bonds stand out for their ability to create seamless length and volume. However, not all bonds are made the same. Understanding the distinctions between flat, round, and nano keratin bonds is crucial for anyone looking to achieve flawless extensions or for those researching the right method for their hair type and lifestyle. At Ivana Farisei bonding hair extensions are offered using a variety of bond shapes and sizes, ensuring each client receives a tailored look that blends beautifully with their natural hair.

Flat keratin bonds are engineered for those who value subtlety and comfort. Unlike their round or cylindrical counterparts, the flat bond is compressed, creating a slim, plate-like attachment that sits parallel and close to the scalp. This minimizes bulk, making the bonds less detectable both visually and by touch–a key priority for clients in professional settings or with fine hair.
The application process for flat bonds involves fusing a thin strip of keratin glue to a precise section of natural hair with a heat connector. The result is a bond that distributes weight over a larger, flatter area, reducing tension on the root and promoting healthier growth retention. For London’s dynamic crowd–where style changes are frequent and hair health is paramount–this is a significant advantage.
Flat bonds excel in their longevity and resilience. Their shape reduces the risk of slippage and tangling, especially in hair that is frequently styled or exposed to movement. Extension specialists often recommend flat keratin bonds for wearers who want an undetectable finish, especially when hair is worn up or in sleek styles. Their adaptability also allows them to be cut or shaped for even more personalized placement, making maintenance and refits efficient.
Clients report that flat bonds feel lighter and cause less scalp irritation compared to round bonds. This comfort does not compromise durability; high-quality keratin ensures the extensions remain secure for several months with proper aftercare. In the context of the London climate, where rain and humidity can challenge bond integrity, flat bonds show notable resistance to swelling and softening.

Round keratin bonds, often referred to as “U-tip” or “nail-tip” bonds, are a staple in the world of professional hair extensions. The bond itself is cylindrical, shaped like a tiny grain of rice or a small pellet. Extension specialists fuse these pre-formed tips to small sections of natural hair using a heating tool that melts the keratin, forming a secure and durable connection.
The round shape allows for extremely tight, secure attachment. When the keratin is melted and rolled between the technician’s fingers, the result is a neat, rounded bond that encases the natural hair. This configuration is particularly effective for clients with medium to thick hair, as the cylindrical bond provides greater support for heavier or longer extensions. For those seeking dramatic transformations or significant length, round bonds provide excellent hold.
Round keratin bonds are favored for their robustness. They can withstand regular washing, heat styling, and the everyday demands of a busy urban lifestyle. London-based clients who frequently change hairstyles benefit from the flexibility of round bonds, as these can be placed in varying densities around the scalp to support everything from voluminous curls to smooth ponytails.
Because the bond is more compact, round bonds can sometimes be less comfortable for clients with very fine or thin hair. They may be more noticeable at the root, especially if the extension color does not match perfectly. However, expert extensionists can tailor the size of the bond, and skilled placement minimizes visibility in most cases.
With consistent care, round keratin bonds can last between three to five months. Proper brushing, use of sulfate-free products, and regular professional check-ups are essential to ensure longevity. In a climate like London’s, where weather can change rapidly, the dense nature of round bonds provides some protection against moisture-related bond degradation, though excessive perspiration or sauna use might still affect adhesion.
Among the offerings at Ivana Farisei a variety of shapes and custom-blended colors are available so clients can achieve a seamless finish with round bonds. Those considering traditional bonded extensions will find that round keratin bonds remain a reliable and time-tested choice for sophisticated results.

Nano keratin bonds represent the forefront of hair extension innovation. These bonds are significantly smaller and lighter than traditional flat or round bonds, offering unparalleled discretion and comfort. Crafted for individuals who desire maximum natural movement, nano bonds are almost invisible, even in hair that is ultra-fine or cut in short layers.
Designed for meticulous application, a nano bond typically consists of a tiny bead of keratin attached to a very fine section of extension hair. The result is a near-surgical level of precision, with each bond blending seamlessly along the hairline and crown. This makes nano keratin bonds the preferred choice for people with thin, fragile, or compromised hair who want to enjoy extensions without added weight or stress on their roots.
The company Ivana Farisei provides innovative solutions including nano keratin bonds for those searching for ultra-natural integration and long-lasting results. With proper application and aftercare, nano bonds can last up to three months before needing professional maintenance.
Key advantages of nano keratin bonds:
Nano bonds do require advanced technical skill for flawless application, so choosing an experienced extensionist is essential. For busy London lifestyles, their low maintenance and comfort make them a compelling choice among modern extension methods.
Selecting the optimal keratin bond type depends on several factors, including hair texture, density, lifestyle, and desired styling outcomes. London’s diverse clientele have unique needs that must be carefully evaluated to guarantee satisfaction and long-term hair health.
Flat bonds are recommended for clients seeking a discreet and lightweight option, especially for fine to medium hair. Their flat profile makes them very comfortable for everyday wear, with minimal risk of being detected. Round bonds, thanks to their secure grip, are ideal for those wanting dramatic volume and robust attachment, particularly if the natural hair is thick or the extensions are especially long.
Nano keratin bonds shine in cases where subtlety and comfort are paramount. While they may require more frequent touch-ups and a higher initial investment due to the precision involved, the payoff is consistently natural-looking, damage-free results.
When considering a salon, expertise with all three bond types is critical. Consulting with a certified extensionist who can assess your hair and recommend the best method will yield more natural and lasting results. The company Ivana Farisei delivers a comprehensive consultation process to ensure the right bond is chosen for every client’s unique hair goals nano keratin bonds for ultra-fine hair.





