Sunscreen Is the Treatment That Makes the Others Last

If I could put one thing in every client's routine and take everything else away, it would not be a laser or a serum. It would be sunscreen. I know how that sounds coming from someone who runs machines for a living. But I have watched too many good results quietly undone by unprotected sun to pretend otherwise.

Why every treatment depends on it

Think about what most treatments are for. Brown spots, uneven tone, dullness, texture from years of light. Now think about what causes almost all of that. Sun. When you clear a sun spot and then keep collecting sun, you are treating and re-injuring the same skin on a loop. When you resurface and then skip protection, the fresh skin you just paid for pigments unevenly and ages faster than it should. Sunscreen is not a nice add-on to a treatment plan. It is the thing that decides whether the plan holds.

This is even more true right after a treatment, when skin is vulnerable and prone to color unevenly. But it is true forever after too. The result you loved at your follow-up appointment lasts in direct proportion to how well you keep the sun off it.

You can pay to clear the damage, or you can prevent it daily. The daily habit is cheaper and it wins.

Living in LA changes the math

Here is what I tell people who moved here from cloudier places. Los Angeles sun is not seasonal in the way you are used to. It is a year-round, most-days fact. And the exposure that ages skin is not only the beach day you remember. It is the commute with the sun through the window, the walk to lunch, the errands, the patio coffee. That incidental light adds up to far more lifetime exposure than the occasional deliberate day out. So protection here cannot be a summer thing or a beach thing. It has to be a Tuesday thing.

How to actually use it

Most people who think sunscreen does not work for them are using too little, too rarely. The fixes are simple.

• Use enough. Faces are chronically under-applied. Roughly a nickel-sized amount for the face, and do not forget the ears, the sides of the neck, and the back of the hands, which show sun damage as clearly as any face.
• Reapply. One morning application does not last through a full sunny day, especially if you are outside or sweating. A powder or spray over makeup at midday is better than nothing.
• Wear it daily, not situationally. The point is the accumulation, so the everyday incidental sun is exactly what you are protecting against.
• Find one you will actually wear. The best sunscreen is the one you like enough to use every single day. If it feels heavy or greasy to you, keep trying until you find a texture you do not mind.