We’ve finally reached a point where people understand the importance of sunscreen. SPF on the face has become a daily habit. People protect their skin from tanning, pigmentation, premature ageing, and UV damage more consciously than ever before.
But there’s one area that still gets ignored almost every single day: the lips.
And as a formulator, that has always bothered me.
Our lips are one of the most exposed parts of the face, yet they receive the least protection. We apply SPF 50 on the skin around the lips, but leave the lips themselves completely vulnerable to UV exposure, heat, dehydration, pollution, and oxidative stress.
What many people don’t realise is that lip skin is biologically very different from facial skin. It is thinner, more delicate, and has a significantly weaker barrier function. The lips contain very little melanin, which means they have minimal natural defence against UV radiation. They also lack sebaceous glands, so they cannot naturally lubricate or protect themselves the way the rest of our skin can.
This is exactly why lips dry out faster, lose volume earlier, and become pigmented more easily.
Over time, chronic sun exposure on unprotected lips can accelerate collagen degradation, increase sensitivity, deepen lip lines, and contribute to uneven colour or darkening — especially in Indian skin tones where post-inflammatory pigmentation is very common. In more severe long-term cases, continuous UV damage can even lead to actinic cheilitis, a precancerous condition most commonly seen on the lower lip.
This is not fear marketing. It’s simply an area of sun care that people have overlooked for years.
So when I formulate lip products, I don’t look at them as “just lip oils” or “just glossy balms.” I look at them as protective skincare.
And protection today needs to go beyond basic SPF claims.
Most people only understand SPF, but SPF mainly measures protection against UVB rays — the rays responsible for sunburn and surface-level damage. UVA rays are equally important because they penetrate deeper into the skin and are one of the biggest contributors to photoageing, collagen breakdown, and long-term cellular stress.
That’s where PA++++ matters.
A high PA rating indicates stronger UVA protection. So when a lip product combines SPF 50 with PA++++, it means the lips are receiving broad-spectrum defence against both burning and ageing damage — not just temporary protection on paper.
But scientifically, making a lip product like this is far more difficult than people think.
Lip formulations are extremely sensitive systems. UV filters can easily affect taste, texture, shine, comfort, and stability. Many filters feel heavy, bitter, waxy, or irritating when used on lips. Creating a formula that feels lightweight, glossy, nourishing, non-gritty, photostable, and elegant — while still delivering high UV protection — takes a tremendous amount of formulation balancing.
For me, the goal has always been simple: make protection effortless.
Because the best sunscreen is the one people actually enjoy using and reapplying.
That’s why formats like lip oils work beautifully. People naturally reach for them throughout the day. The shine, nourishment, and comfort become part of the experience — while the UV protection quietly does its job in the background.
I genuinely believe lip SPF is going to become the next major shift in sun care awareness.
We’ve spent years teaching people to protect their face.
Now it’s time we extend the same science, care, and consistency to our lips too.
By Pritika Singh, Formulation Expert
Website: https://sunkey.in/