I think you misunderstand. I only provide information from a medical/scientific point of view, as an intact man, I don’t need any product on my cock and in general, I advise against it unless there are specific needs to be addressed.
I can understand why neonatally circumcised men attempt to restore some function lost due to the procedure and long-term effects (after all, desensitising is at the core of the motivation to perform the procedure), and any product that addresses keratinisation and keeps the skin + mucosa somewhat hydrated, will aid (somewhat)
I would *never* recommend anyone to put an oily substance on the glans, in particular not under occlusion. Fortunately, ‘Man Oil’ is a misnomer as it is not an oil, but a moisturiser. However, I would not recommend applying it under occlusion. Looking at its ingredients, Cerave is still a superior choice (and much cheaper)
The Aloe gel
@BadWilliam420 mentioned is an option to use under the sleeve, but 1) only if fully absorbed and 2) without underwear on top.
The Senfla product will not provide any results the sleeve wouldn’t offer, and the combination of both could (in fact will probably) lead to irritation and chafing. I would never recommend anyone using the product, since it is basically an exfoliant. There may be a slight increase in sensitivity, but that is temporary as the body will adapt.