Keratin tips are even called Fusion bonds. The tips are made of keratin
crystals which are melted with hot extension iron machine and installed
close to the roots. This technique is designed in such a way it gives a
natural look and hair can be placed all over the head. It adds volume,
length, textures, layers to give a versatile look.
It can be called permanent as in can wearfor 5 to 7 months in a stretch without removing unlike clip on extensions. One can treat as your own natural hair as can sleep and shower with it.
Maintenance is there as post care very essential, sulphate free shampoo and conditioner to be used , no oiling , brushing to avoid getting knots at the bonds. Extension brush must be used no fine combs.
So keratin tips a very good option if not removing and wearing extensions always it appears natural and don't feel or looks fake.