When it comes to purchasing a Triangle Powder Puff, both Amazon and Walmart are popular choices. However, to determine where you can get the best deal, you'll need to consider a few factors.

1. Price: The most direct comparison is the price. Both Amazon and Walmart are known for competitive pricing, but the best deal can vary depending on the specific product and any ongoing sales or discounts. It's a good idea to check both websites for the current price of the Triangle Powder Puff you're interested in.

2. Shipping: Shipping costs can significantly affect the overall price of your purchase. Amazon offers free shipping for Prime members, while Walmart offers free shipping for orders over $35. If you're not planning on buying anything else, Amazon might be the better choice. However, if you're planning a larger purchase, Walmart could offer better value.

3. Returns: Both Amazon and Walmart have return policies, but they can vary depending on the product. It's important to check the return policy for the specific Triangle Powder Puff you're interested in before making a purchase.

4. Reviews and Ratings: Customer reviews and ratings can provide valuable insight into the product's quality. Both Amazon and Walmart provide customer reviews, but the number and quality of reviews can vary.

5. Availability: Sometimes, the product may be out of stock on one platform but available on the other. So, it's always a good idea to check both.

In conclusion, the best deal for a Triangle Powder Puff depends on a combination of factors, including price, shipping, returns, reviews, and availability. I recommend comparing these factors on both Amazon and Walmart before making a purchase.