As an expert in clean beauty and skincare, I can provide some insights into Sulwhasoo as a brand. Sulwhasoo is a Korean skincare brand that focuses on traditional Korean herbal medicine and ingredients. While they do incorporate natural ingredients into their formulations, it's important to note that being a clean brand goes beyond just using natural ingredients.

To determine if Sulwhasoo is a clean brand, we need to consider factors such as their ingredient sourcing, formulation transparency, manufacturing processes, and their commitment to sustainability. It's also important to investigate their cruelty-free and vegan claims.

Regarding cruelty-free claims, Sulwhasoo states on their website that they do not conduct animal testing. However, it's essential to verify if they sell their products in countries where animal testing is required by law. This information can help determine the credibility of their cruelty-free claim.

In terms of vegan claims, Sulwhasoo does not explicitly state that all their products are vegan. They do mention using plant-based ingredients, but it's necessary to carefully review the ingredient lists of individual products to ensure they are free from animal-derived ingredients such as beeswax, lanolin, or animal-derived collagen.

To assess Sulwhasoo's commitment to clean beauty, it's also important to examine their ingredient lists for potentially harmful substances such as parabens, sulfates, phthalates, and synthetic fragrances. Additionally, understanding their sustainability efforts, packaging choices, and overall transparency can contribute to evaluating their clean brand status.

In conclusion, while Sulwhasoo incorporates natural ingredients and traditional Korean herbal medicine into their formulations, further investigation is needed to determine their status as a clean brand. It's crucial to review their ingredient lists, cruelty-free claims, vegan options, sustainability efforts, and transparency to make an informed decision about their products.