Tretinoin

Tretinoin is a topical retinoid and a derivative of vitamin A. It is used mainly for acne and is available in different strengths and formulations.

It works by influencing the way skin cells develop and shed inside the pores. This helps prevent pores from becoming blocked and makes tretinoin particularly useful for comedonal acne, including blackheads and whiteheads.

Topical retinoids, including tretinoin, are recommended as first-line acne treatments in current acne guidelines.

Tretinoin is mainly prescribed for acne vulgaris, but dermatologists may also use it for other skin concerns.

It can help with:

• Blackheads
• Whiteheads
• Clogged pores
• Mild to moderate inflammatory acne
• Preventing new acne lesions
• Post-acne pigmentation in some treatment plans
• Certain signs of photoageing

For acne, its role is particularly important in preventing the formation of microcomedones, which are early clogged pores that may later develop into visible acne lesions.

Acne begins before you actually see a pimple on the skin.

One of the early changes is abnormal shedding of skin cells inside the hair follicle. These cells can mix with sebum and contribute to a blocked pore. Tretinoin helps normalise this process.

In simple terms, tretinoin normalises cell turnover inside the pore and helps prevent clogged pores with fewer new acne lesions.

It also has anti-inflammatory effects, which can help with inflammatory acne. This is why tretinoin is not simply a "pimple-drying cream". It works on the acne process itself.

Yes. Blackheads and whiteheads are types of comedones, and tretinoin is particularly useful for comedonal acne. It helps keep pores from becoming blocked and can gradually improve existing comedonal lesions.

Yes. Tretinoin can help with both non-inflammatory and inflammatory acne, although the treatment plan depends on the severity of the acne.

For moderate or more inflammatory acne, a dermatologist may combine a topical retinoid with other treatments rather than relying on tretinoin alone.

This is one of the most common concerns.

When you first start tretinoin, you may experience:

• Dryness
• Redness
• Peeling
• Stinging
• Burning or irritation

Some people may also feel that their acne is temporarily more noticeable during the early phase of treatment. This does not automatically mean that tretinoin is damaging your skin or that it will not work.

However, significant or persistent irritation should not simply be ignored. Your dermatologist may adjust how often you use it or recommend changes to your skincare routine.

The most common side effects are related to skin irritation.

You may notice:

• Dry skin
• Peeling
• Redness
• Stinging
• Burning
• Increased sensitivity

These effects are often more noticeable when treatment is first started.

The strength of tretinoin, formulation, frequency of application and your individual skin sensitivity can all affect how well you tolerate it.

Tretinoin is generally applied in the evening, unless your dermatologist has given you different instructions.

A simple routine could be:

Night: Gentle cleanser → allow skin to dry → pea-sized amount of tretinoin → moisturiser

Use only a small, pea-sized amount for the entire acne-prone area, rather than applying a thick layer directly onto individual pimples.

More product does not mean faster results. It can simply mean more irritation. Your dermatologist may recommend starting less frequently and gradually increasing use depending on your skin's tolerance.

If you are new to tretinoin or your skin is sensitive, applying it to completely dry skin can help reduce irritation. After cleansing, gently pat your face dry and give your skin some time to settle before applying tretinoin.

If your dermatologist has given you specific instructions, follow those instead.

Yes, and moisturiser can be very helpful.

Tretinoin can cause dryness and irritation, so maintaining your skin barrier is important.

You can use moisturiser:

• Before tretinoin if your skin is sensitive
• After tretinoin
• Or both, depending on your dermatologist's advice and your skin's tolerance

Some people eventually use tretinoin every night, but you do not necessarily need to start with daily application. If your skin is new to tretinoin, your dermatologist may recommend using it less frequently at first and increasing gradually as your skin adjusts.

For example, some people may begin with alternate-night applications before progressing to more frequent use. The right schedule depends on the strength of tretinoin and how your skin responds.

Tretinoin requires patience.

You should not expect your acne to disappear within a few days.

Clinical studies commonly assess topical retinoid treatment over around 8–12 weeks, and improvement generally develops gradually. You may notice changes earlier, but meaningful improvement usually requires consistent use over several weeks.

And remember: tretinoin is also used to prevent new acne, so continuing treatment as prescribed can be important even after the skin starts looking better.

Your skin can become more sensitive and irritated while using tretinoin. This is why daily sunscreen is an important part of your routine. Use a broad-spectrum sunscreen during the day and take additional sun-protection measures when spending time outdoors.

Sun protection is particularly important if you are also concerned about acne marks or pigmentation, because irritation and UV exposure can contribute to dark marks.

This needs a little clarification. Tretinoin primarily treats acne, not every type of acne scar.

Because it improves cell turnover and can help control new acne, it may also have a role in managing post-inflammatory hyperpigmentation as part of an overall treatment plan.

However, brown acne marks, red marks and true depressed acne scars are different concerns and may need different treatments. So, if your main concern is acne scarring, it is worth having the type of scar assessed by a dermatologist.

Yes. Tretinoin is often used as part of a combination acne treatment.

Depending on the type and severity of acne, a dermatologist may combine a retinoid with treatments such as benzoyl peroxide or other topical medicines.

Current acne guidelines support combining topical treatments that work through different mechanisms when appropriate. However, adding several strong active ingredients yourself can increase irritation.

Tretinoin should generally be avoided during pregnancy.

The amount absorbed through the skin is much lower than with oral retinoids, but because there are limited data and retinoids are associated with important pregnancy concerns, dermatology guidance recommends avoiding topical retinoids during pregnancy.

If you are pregnant, planning a pregnancy or think you may be pregnant, speak to your dermatologist or doctor about your acne treatment.

No. The names can be confusing, but they are different medicines. Tretinoin is usually used topically, as a cream, gel or similar formulation.

Isotretinoin is an oral retinoid used under medical supervision for certain types of more severe or persistent acne. Although both belong to the retinoid family, they should not be treated as the same medicine.

Not necessarily.

Tretinoin can be very useful, but the appropriate treatment depends on:

• Type of acne
• Severity of acne
• Skin sensitivity
• Previous treatments
• Presence of acne marks or scarring
• Other medicines or skincare products you are using

If your acne is painful, severe, scarring or not improving, it is better to have it assessed rather than repeatedly changing products yourself.

Think of tretinoin as a long-term acne treatment rather than a quick spot treatment.

Remember:

• Use it exactly as prescribed.
• Start slowly if advised by your dermatologist.
• Use only a small amount.
• Moisturise regularly.
• Use sunscreen every morning.
• Avoid excessive exfoliation if your skin is irritated.
• Don't stop immediately because of mild initial dryness without discussing it with your dermatologist.
• Seek advice if you develop significant irritation.
• Avoid tretinoin during pregnancy unless your healthcare professional specifically advises otherwise.