Lotus Herbals Safe Sun SPF 20 is a sunscreen product offered by Lotus Herbals, a popular Indian skincare brand known for its herbal formulations. SPF 20 indicates that it provides moderate sun protection against UVB rays, which are responsible for causing sunburn. However, it's important to note that SPF alone doesn't provide full protection against all types of UV radiation.

For comprehensive protection, it's advisable to use a broad-spectrum sunscreen that shields against both UVB and UVA rays. Additionally, reapplication of sunscreen every few hours, especially after swimming or sweating, is recommended for optimal protection.