The Philips Norelco OneBlade is a hybrid electric trimmer and shaver that can be used for easy facial styling. It has a unique blade design that cuts on both edges, making it a good hair trimmer and electric razor. Here are some of the positive and negative aspects of the OneBlade based on the search results:

Positive:

• It is comfortable to hold.
• The charge lasts a long time.
• It is an excellent shaver for sensitive skin.
• It is a cheap razor that performs much better than other budget razors.
• It comes with a variety of guide combs and an edge guard for shaving delicate areas.

Negative:

• While dry shaving with OneBlade, it is not as close a shave as a razor on prepped skin.
• It takes 8 hours to charge the razor fully, and it can only be used for 45 minutes.

There is no information available on the specific materials or ingredients used in the OneBlade.