Why Take Vitamin A at Night?

Name: Why Take Vitamin A at Night?
Uploaded: 2025-05-19T13:01:40+00:00
Duration: 39 s
Channel: Dr. Charles Mok
Description: A short YouTube clip by Dr. Charles Mok explaining why vitamin A (topical retinoids) should be used at night: stronger vitamin A increases…

19 May 2025 · 1 min

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0:39

A short YouTube clip by Dr. Charles Mok explaining why vitamin A (topical retinoids) should be used at night: stronger vitamin A increases photosensitivity so it is applied at night and avoided during tanning. The speaker recommends starting most patients on 0.5% but notes that people who are already tolerant, have oilier skin, or are men may go straight to 1%; he leans toward stronger formulations when he expects low sensitivity.

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2025-05-19T13:01:40Z

0.5%

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The vitamin C in the morning, the vitamin A at night. Why vitamin A at night? A strong vitamin A makes your skin a little bit light sensitive. Okay, Weaker vitamin A's don't. But strong vitamin A makes your skin a little light sensitive. So we use a strong one at night. If they're going away on a holiday where they're going to be tanning, probably don't use it that week but use it normally if you're. Even if you're out in the sun on a routine basis. So the vitamin A at night we start people on half percent. Why do we have 1%? There's a lot of people that are Ariana retinol, just put them on 1%. They're like the stronger one or somebody that has like more oily skin or a man. They can probably go right to a 1% if the cost is so close. You're getting twice as much retin A in this one. So I kind of lean towards stronger if I think the patient won't have sensitive skin.