When to Use Topical A Acid for Night Owls: A Dermatologist's Guide

Topical retinoic acid should be applied at night?

Hello, doctor.
I have a few questions regarding retinoic acid (A acid).
I am currently using retinoic acid to treat my acne (Acne Skin Moisturizer).
Due to my work schedule, I mostly sleep during the day when the sun is out, and my room has light coming in through the windows.
Can I use retinoic acid during the day while I sleep, or should I wash my face and apply retinoic acid lotion before bed and then use sunscreen? Because of my reversed day-night cycle, I'm unsure where to incorporate retinoic acid into my routine.
Additionally, some sunscreen products claim that sunscreen is necessary indoors to prevent skin darkening, is this really necessary? If I need to use sunscreen indoors, could it potentially burden my skin? Thank you, doctor.

Sandy, 10~19 year old female. Ask Date: 2015/06/26

Dr. Wu Yuxin reply Dermatology

1.
The use of acne treatment products is less strict regarding UV exposure compared to traditional retinoids, but it is still recommended to avoid sunlight as much as possible.
However, based on your condition, I still suggest using it before bedtime.
2.
If you have large windows indoors, it is still advisable to apply sunscreen every 2-4 hours.

Reply Date: 2015/06/26

More Info

When it comes to using topical A acid (also known as retinoic acid or tretinoin) for treating acne, especially for individuals with unconventional sleep schedules, there are several important considerations to keep in mind.
First, let’s address the timing of application. A acid is typically recommended for nighttime use due to its sensitivity to sunlight. However, if you are a night owl and sleep during the day, you can still incorporate A acid into your skincare routine. The key is to ensure that you apply it after cleansing your face, regardless of the time of day. If you wake up in the evening and plan to go to bed in the morning, you can wash your face, apply A acid, and follow it with a moisturizer before heading to sleep. This routine is effective as long as you are not exposing your skin to direct sunlight immediately after application.

Regarding your concern about light exposure while sleeping during the day, it is important to note that while A acid is sensitive to UV light, the primary concern is applying it when your skin is exposed to sunlight. If your room is well-lit, it is advisable to use blackout curtains or an eye mask to minimize light exposure while you sleep. This will help protect your skin from potential degradation of the A acid and ensure that it remains effective.

Now, let’s discuss the use of sunscreen. It is crucial to apply sunscreen daily, regardless of whether you are indoors or outdoors. UV rays can penetrate windows and still affect your skin, leading to hyperpigmentation and other skin issues. Many dermatologists recommend using a broad-spectrum sunscreen with an SPF of at least 30, even when you are indoors, especially if you are near windows. This is particularly important for individuals using A acid, as it can make your skin more sensitive to sunlight, increasing the risk of sunburn and irritation.

As for the concern about whether using sunscreen indoors could burden your skin, it is essential to choose a lightweight, non-comedogenic formula that suits your skin type. If you have oily or acne-prone skin, look for gel-based or oil-free sunscreens that won’t clog your pores. This way, you can protect your skin without feeling weighed down.

In summary, as a night owl using A acid for acne treatment, you can effectively incorporate it into your routine by applying it after cleansing your face, regardless of whether it is day or night. Ensure that you protect your skin with sunscreen every day, even indoors, to prevent UV damage. If you have any further concerns about your specific skincare routine or experience any adverse effects, it is always best to consult with a dermatologist who can provide personalized advice based on your skin type and condition.

Similar Q&A

Using Topical A Acid: Timing and Best Practices for Skin Care

Hello, I usually finish showering around 8:30 PM. If I apply tretinoin (A acid) right after showering under the lights at home and then go to bed at 11 PM when the lights are off, is that acceptable? Do I have to apply it only right before bed?

Dr. Wu Yuxin reply Dermatology
It's okay.

Understanding Your Dermatology Medications: A Guide to Usage and Effects

Hello, Pharmacist: A few days ago, I visited a dermatologist who prescribed me the following topical ointments/gels. The details of the medications are as follows: 1. DALCINE GEL, apply three times a day for three days; 2. HEPARINOID OINTMENT, as needed for three days to reduce s...

Dr. Liao Huiling reply Pharmacology
Hello! Regarding the therapeutic uses of individual medications for your skin symptoms, it is advisable to consult your physician during your visit to avoid any misunderstandings that may arise from explanations given by others afterward. Topical medications for treating acne and...

Understanding Acne Treatment: Morning vs. Night Creams Explained

I visited a dermatologist who prescribed two ointments: Aczo Gel Sinphar and Azelaic Acid. I forgot which ointment serves which purpose, but I remember the doctor mentioned that one should be applied in the morning and the other at night. One can only be applied to new red acne, ...

Dr. Wu Yuxin reply Dermatology
In principle, ACZO can only cause new acne lesions in the short term.

Understanding Glycolic Acid: A Guide for Acne Treatment and Skin Care

I have been experiencing persistent acne, and after trying antibiotics and using tretinoin for three months without any improvement, I decided to visit a dermatologist at a hospital yesterday. I expressed my desire to undergo a chemical peel with alpha hydroxy acids (AHAs), but t...

Dr. Zheng Lizhen reply Dermatology
Hello: A thin layer of alpha hydroxy acid (AHA) lotion is sufficient. Most beginners may feel a slight sting or itch; if there is no sting or itch, it indicates that the skin is adapting well. If there are no issues after using it for 1-2 weeks, you can consider proceeding with a...