Based on the provided reviews, the Purito Oat in Calming Gel Cream can be used as a standalone moisturizer for some users, particularly those with normal to oily skin types. One reviewer mentioned that they appreciate the product for its non-greasy, lightweight formula that doesn't leave an oily feel on their skin. However, the same reviewer suggested that those with drier skin might want to layer a richer moisturizer on top for additional hydration.

It's important to consider your own skin type and moisture needs when deciding if this product can serve as a standalone moisturizer. If you have very dry skin, you may find that you need an additional layer of hydration. On the other hand, if you have oily or combination skin, this gel cream might provide sufficient moisture without feeling heavy or greasy.

Based on the provided reviews, the Purito Oat in Calming Gel Cream does not appear to cause breakouts or tiny bumps on the face. Both reviewers have reported positive experiences with the product, noting that it has not caused any adverse reactions such as blemishes or folliculitis. One reviewer specifically mentioned that their folliculitis improved after using the cream.

However, it's important to note that individual reactions to skincare products can vary. What works well for one person may not work for another, depending on skin type and sensitivity. It's always a good idea to perform a patch test before incorporating a new product into your routine, especially if you have sensitive skin or are prone to breakouts.