SPF50+ indicates high sun protection, offering a high level of protection against harmful UV rays. This is particularly important for those with sensitive skin, as they may be more prone to sunburn and other skin issues when exposed to sunlight. As it's labeled as "Online Only," it suggests that the product might not be available in physical stores and can only be purchased through online retailers or the company's website. If you're considering purchasing this product, it's always a good idea to check the full list of ingredients to ensure they align with your skin sensitivities and needs. Additionally, consider checking reviews or consulting with a dermatologist if you have specific concerns about your skin condition.