The usage of Tretinoin varies depending on the dosage form, and there is a strict distinction between oral and topical formulations in terms of medication timing, application method, and dosage adjustment. Correctly implementing these standards is the foundation for ensuring treatment effectiveness and reducing unnecessary stimulation.

1、 Oral preparations: taken with meals and dose titration

1. Take with meals

It should be taken with food or immediately after meals to promote absorption and alleviate stomach discomfort.

It is recommended to combine meals containing moderate amounts of fat, such as milk or eggs, to enhance the bioavailability of the medication.

2. Principle of dose titration

Treatment should start with a low dose and gradually increase to the target maintenance dose under the guidance of a doctor based on the body's tolerance.

Each dose adjustment should be made at least 2 to 4 weeks apart and determined by a doctor's evaluation.

It is strictly prohibited to increase or decrease the dosage or change the frequency of medication on one's own.

3. Handling of missed services

If you forget to take your medication, you should take it as soon as you remember.

If the next dose is approaching, the missed dose should be skipped and the next dose should be taken according to the original plan.

Do not take double the dose at once to make up for missed doses.

2、 External preparation: use in the dark at night

1. Preparation before use

Before going to bed every night, use a gentle facial cleanser to clean the face and wait for the skin to completely dry (about 20-30 minutes).

Ensuring that the skin is in a dry state before applying medication can reduce the risk of irritation.

2. Application method

Take a small amount of ointment or gel, apply a thin layer of it on the affected part with your fingertips, and cover it evenly.

Strictly avoid areas around the eyes, lips, inside the nasal cavity, as well as skin damage or eczema.

3. Nighttime light avoidance requirements

This product is photosensitive and should only be used at night. After use, the strong light source should be turned off and avoid direct sunlight exposure.

The next morning, thoroughly clean the application area and use sunscreen products to avoid UV damage.