Skin Care Guide

Tretinoin: What It Does For Your Skin

Tretinoin gets more questions in consultations than almost anything else we carry. It's one of the most studied ingredients in skincare, and one of the few with real, well-documented results for acne and aging skin. It's also the one most people quit too early, usually in week two, right when it feels worse before it gets better. Here's what it does, and how to get through the first month without giving up.

What it is

Tretinoin is a retinoid, a vitamin A derivative. It speeds up skin cell turnover. Newer, healthier cells reach the surface faster, pores stay clearer, and old pigmented or sun-damaged cells get replaced sooner. It's one of the few skincare ingredients with decades of clinical research behind it, for both acne and visible signs of aging.

What it treats

• Acne, by keeping pores clear and reducing new breakouts
• Fine lines and rough texture from sun exposure and aging
• Dark spots and uneven tone, as cell turnover speeds up
• Enlarged pores and dullness

It doesn't erase deep wrinkles or reverse years of sun damage completely. It works on the surface-level changes, and it works slowly.

How to use it

Wash your face and let it dry completely, 20 to 30 minutes when you have the time, damp skin absorbs too much too fast and irritates easily. Use a pea-sized amount for your whole face, applied with clean fingertips. Start once every other night, not nightly, and build up as your skin adjusts. Moisturizer after it dries takes the edge off without canceling out the effect.

The purge period

Most people hit a rough patch in the first two to three weeks: redness, flaking, sometimes a small wave of new breakouts as everything under the surface turns over faster. This is normal, and it's the point where most people stop, right before it gets better. Real results take eight to twelve weeks of consistent use. If irritation is severe rather than mild, ease back to every third night rather than quitting outright.

What to expect

Burning, stinging, redness, and peeling are common in the first few weeks and usually settle down. Mild dryness sometimes continues longer, a good moisturizer handles it. Stop use and talk to a doctor if a reaction doesn't settle down or feels severe.

The One Rule: Sunscreen

Tretinoin raises photosensitivity more than most active ingredients. Daily broad-spectrum SPF 30 or higher is required, not optional, and skip tanning beds entirely, especially in the first six months.

If you're pregnant or breastfeeding

Tretinoin belongs to a class of ingredients, retinoids, generally avoided during pregnancy. Talk to your doctor before starting or continuing tretinoin if you're pregnant, trying to conceive, or breastfeeding, and don't start it on your own during this time.

Pairing it with other actives

Tretinoin and azelaic acid both come up often in the same conversation, they treat overlapping concerns but work differently, and combining strong actives too fast is the most common cause of irritation we see. If you're curious about azelaic acid too, read our azelaic acid guide first, and introduce one new active at a time rather than starting both together.

Healing from a brow or lip appointment?

Same rule as every active ingredient: wait until your skin fully heals before restarting tretinoin. Check our aftercare guide for the full healing timeline, and talk to your artist before bringing any active back into your routine near a healing area.

Adding it to your routine

If you want to add tretinoin to your routine, we carry a formulation in the BeautyShop. Book a consultation and we'll look at your skin, your goals, and your appointment schedule together.