What causes yellowing? Or an invisible stain?
Exposure to heat or simply the passing of time can cause some stains (which might have been invisible immediately after the mishap occurred) from food, beverages, or other oily substances to oxidize and turn a yellow or brown colour.  These are difficult to treat, but there might be hope yet.  Some fabrics do not agree with antiperspirant, perfumes and aftershaves.  Try to apply these products before you dress and it will minimize long term damage.  Also, repeated contact to perspiration will cause a permanent damage, often seen on shirts and blouses under the arms.

We Recycle Hangers

Only 15% of Clothes  Hangers are Recycled

The Preeners Aims to Make it Easier
to Recycle