Watch this demonstration on how to apply Last Tape Preservative to reel-to-reel tape. If you have older tape, you probably should dehydrate it first. See advice on how to do that here: (How and why should I dehydrate my tapes?). In this video, Jeff shows how to use the tape deck to apply Tape Preservative evenly over the entire tape.
Moisture and oxidation are the top causes of tape degradation. They damage the binder of the tape, which is made of acetate or polyester. LAST Tape Preservative stops that deterioration and stabilizes the binder. It also dramatically reduces the friction at the tape/head interface.
LAST Tape Preservative has many benefits. It significantly reduces data loss from magnetic tape, and protects the tape binder from deterioration by humidity. The smoother tape action extends the life of the heads and guides. Last Tape Preservative reduces tape wear and distortion, as well as tape abrasiveness and scrape flutter.
After treatment, you will notice improved playback performance and high frequency response. The S:N ratio will increase, resulting in clearer music. With the protective properties of Tape Preservative, your tape will last up to 10 times longer.