The Armor-All Myth

With the best of intentions, we can sometimes do more harm when we think we’re helping. For instance, NEVER use any silicone based rubber protectant products such as Armor All on a mask. It can do some strange things to rubber over time. And never EVER use shoe polish, Vaseline, or saddle soap. The oil content will kill the liveliness of latex, and break it down.

The biggest problem with Armor-All is that while it advertises that it will protect plastic and leather. The silicone will not do anything for stiffening rubber. It will not become softer, nor will it keep latex from cracking when it becomes brittle. It does contain some UV protectant, but other than that it will make your mask too slippery for any repairs that may be needed later when it finally does become too brittle to display properly.