First of all, you need to realise that fiberglass nails are fragile and can easily break if not handled properly. Never open the lid of a bottle or jar with these nails which can cause them immediate damage.
You should also realise that these nails are purely for decorative purpose and not for doing such works that can damage these nails easily.
However, if you have to work while you are using fiberglass nails, then use gloves which will save your nails touching directly to different things. Rubber gloves are the best choice that do not let your feel pressure on the nails during work.
Do not touch things that have strong chemicals as they can easily damage fiberglass nails and also can cause them to flake off.
Always use nail oil and cuticle which will keep the nails moisturized and prevent them from becoming dry. However, wash your hands before you use oil on your nails which will also prevent from infection.
Do not forget to fill your fiberglass nails once in every two-week period. If your natural nails grow slowly, then you can take three weeks to fill your fiberglass nails.
If you are using too long fiberglass nails, then you have to take extra care of the nails as they are more vulnerable and are broken easily even if you get your nail hit with a solid surface accidently.
Maintenance of fiberglass nails is very important and for that purpose you need to keep consulting with your nail technician with regular intervals.