As awareness around skincare continues to grow, consumers today are paying closer attention to sunscreen labels beyond just SPF. One of the most commonly noticed indicators is the PA rating – often seen as PA+, PA+++, or PA++++. While these symbols are becoming increasingly familiar, very few people actually understand what they mean or why they matter for long-term skin health. The truth is, SPF alone does not tell the complete story of sun protection. To truly protect the skin, it is important to understand the role of UVA rays and how the PA grading system works.
What Is UVB?
SPF primarily measures protection against UVB rays – the rays responsible for sunburn.
What Is UVA?
UVA rays, on the other hand, penetrate much deeper into the skin and are often referred to as the “silent agers”. Unlike UVB damage, which is immediately visible as tanning or redness, UVA damage accumulates gradually beneath the surface, leading to premature ageing, pigmentation, dullness, and loss of skin elasticity.
What Is The PA System?
This is where the PA system becomes important. The PA system, which stands for “Protection Grade of UVA”, measures how effectively a sunscreen protects the skin from UVA exposure. The greater the number of plus signs, the higher the level of UVA protection offered by the sunscreen.
What Is PA+?
PA+ indicates basic protection.
What Is PA++++?
PA++++ signifies extremely high UVA defense.
For Indian skin, UVA protection is particularly important because prolonged sun exposure can trigger hyperpigmentation, tanning, uneven skin tone, and inflammation. Even when the damage is not immediately visible, repeated exposure silently impacts the skin barrier.
Do You Need Sunscreen Only In Summer?
Another important factor to understand is that sun protection is not seasonal. UVA rays remain present throughout the year, including on cloudy days and indoors. Daily exposure contributes significantly to long-term skin damage making sunscreen an essential everyday skincare product rather than one reserved only for vacations or peak summer months.
Choosing the right sunscreen should therefore be less about chasing the highest SPF number and more about finding a formulation that supports regular use. A broad-spectrum sunscreen with high UVA protection, comfortable wearability, and compatibility with your skin type is ideal for daily protection.
Why Is Sun Protection A Long-Term Investment?
Sun protection should also be viewed as a long-term skin investment rather than a seasonal skincare step. The effects of sun damage often remain invisible for years before appearing as premature ageing and dullness. By the time these concerns become visible, much of the underlying damage has already accumulated. Therefore, protecting your skin the right way does not mean avoiding the sun altogether – it means being mindful of exposure and making sunscreen a non-negotiable part of your daily skincare routine.
A sunscreen that feels lightweight, blends comfortably into the skin, and is reapplied regularly is often more effective in practice than a heavier formula that users avoid wearing altogether. A scientific blend of sunscreens system with UVB protection and an effective UVA protection is ideal for Indian skin.
Also Read: Why Melanin-Rich Skin Needs Its Own Science: Reframing Global Beauty Through An Indian Lens
