Marvellous Skin Lotion is a skin care product that is commonly used to moisturize and protect the skin. If the product has expired or gone bad, it may have a number of adverse effects, including:

1. Reduced effectiveness: Expired balm may not moisturize the skin as effectively, or its effectiveness may be reduced.

2. Causes skin irritation: Expired moisturizing creams may no longer be suitable for the skin and may even cause skin irritation.

3. Skin infections: Expired moisturizers can harbor bacteria that can cause skin infections after use.

Therefore, it is generally not recommended to use expired moisturizers. If your moisturizer has expired, the best thing to do is to throw it away and buy a new, unexpired product.