After analyzing the search results, here are some of the best shaving creams for the bikini area, along with their positive and negative aspects, and ingredients or materials:

1. Coochy Plus Moisturizing+pH Balanced Intimate Shaving Cream: This shaving cream is pH-balanced and contains aloe vera, jojoba seed oil, and avocado oil. It is designed to prevent razor burn and bumps, and it is suitable for all skin types.

2. EOS Sensitive Skin Shave Cream: This shaving cream uses aloe to calm the area being shaved and provides a super smooth shave without razor burn and bumps. It is fragrance-free, which means it is free of nasty irritants.

3. Completely Bare Hair Removal Experts Bikini Bump Blaster: This product is designed to prevent ingrown hairs and bumps. It contains glycolic acid, salicylic acid, and phytic acid, which exfoliate the skin and prevent ingrown hairs.

4. Bikini Zone Medicated After Shave Crème: This shaving cream is designed to soothe and calm the skin after shaving. It contains lidocaine, which helps to relieve pain and itching, and aloe vera, which helps to moisturize the skin.

5. Flamingo Foaming Shaving Gel: This shaving gel is designed to provide a close, smooth shave. It contains aloe vera, which helps to soothe the skin, and is free of parabens, sulfates, and phthalates.

Positive aspects of these shaving creams include their ability to prevent razor burn, bumps, and ingrown hairs, and their moisturizing properties. Negative aspects may include the price and the fact that some products may not work for everyone.

Ingredients or materials used in these shaving creams include aloe vera, jojoba seed oil, avocado oil, glycolic acid, salicylic acid, phytic acid, lidocaine, and various other natural ingredients.