The one product I tell every single client they can't skip  
broad-spectrum SPF 40 that protects, hydrates, and defends against 
aging all in one step.

If you take only one piece of skincare advice from me, let it be 
this: wear sunscreen every day. Sun exposure is the #1 cause of 
premature aging, dark spots, and the very acne marks people work so 
hard to fade. iS Clinical Extreme Protect SPF 40 makes it easy  it's 
a broad-spectrum sunscreen, antioxidant treatment, and hydrating 
moisturizer in a single step, so there's no excuse to skip it.

It wears beautifully under makeup, doesn't leave a heavy white cast, 
and actively defends your skin while you go about your day.

WHAT IT DOES:
- Broad-spectrum SPF 40 sun protection
- Defends against UV-related aging and dark spots
- Delivers antioxidant protection from environmental damage
- Hydrates like a daily moisturizer
- Helps protect the results of your other products
- Wears well under makeup

WHO IT'S FOR:
Everyone, every skin type, every day. Especially important if you're 
using exfoliating acids, treating acne, or fading dark spots  all of 
which make sun protection essential.

HOW TO USE:
Apply as the last step of your morning routine, after serums and 
moisturizer. Use generously on the face, neck, and any exposed skin. 
Reapply throughout the day with prolonged sun exposure.

ESTHETICIAN TIP:
Sunscreen is the single most effective anti-aging product that 
exists  full stop. And if you're using mandelic acid, salicylic 
acid, or any treatment serum, daily SPF isn't optional. Those 
products make your skin more sun-sensitive, so protecting it is what 
actually locks in your results.

SIZE: