Look over your furniture to see how it was put together. Teak furniture is often built using a combination of glue, nails and metal links. Furniture that was glued together is often cheaper but harder to fix, as you will need industrial-strength glue to fix any problems, and it can be difficult to obtain.
Decide whether you want to restore teak furniture to its original color. Teak changes color considerably over time (from rich brown to silvery gray), but this is considered a normal part of the aging process.
Look for corrosion-resistant screws or weatherproof glue to use for repairs. If you are using screws, choose some that match the color and design of the furniture. If you cannot find screws that are similar to those that came with the furniture, you may want to use paint to cover the screws or to tint the whole area, so that the screws become inconspicuous.
Repair chips and nicks by adding wood fillers. Wood fillers can be bought at home repair shops and come in a variety of densities and consistencies. For small scratches or nicks, you may want to use stain markers that can hide the imperfections without the need to repaint the whole piece.
Keep in mind that small changes in the surface of the wood actually add to the character of the piece and may not need to be repaired. Only problems that affect the structure of the piece should be fixed.