Updated September 2026.

Can you use tretinoin in summer? In many cases, yes. The season itself does not determine whether a topical retinoid can be continued. The more important considerations are sun exposure, skin irritation, sunburn, the reliability of daily UV protection and the instructions provided by the prescriber.

Tretinoin is a prescription-only medicine in the UK. Individual prescribing instructions take priority over general skincare information, particularly before a holiday, during periods of intense sun exposure or when the skin is already irritated.

Does tretinoin make skin sensitive to the sun?

Official medicine information for topical tretinoin advises minimising unnecessary exposure to sunlight and artificial ultraviolet light. It also recommends sunscreen and protective clothing when exposure cannot be avoided.

Tretinoin commonly causes dryness, redness, peeling and irritation, particularly when treatment begins or the concentration is changed. Irritated skin may be less tolerant of sunlight, heat, wind, chlorine and salt water. This is why summer tretinoin use requires careful attention to both UV protection and the condition of the skin barrier.

Tretinoin is not simply a seasonal skincare ingredient that becomes unsuitable on a particular date. Someone experiencing minimal irritation and using reliable sun protection is in a different position from someone with active peeling, sunburn or prolonged unavoidable UV exposure.

Do you need to stop tretinoin during summer?

There is no universal requirement to stop tretinoin for the entire summer. Many people use prescribed topical retinoids throughout the year. However, continuation should remain consistent with the product instructions and the treatment plan provided by the prescriber.

A temporary change may need to be considered when:

• The skin has become sunburned
• There is persistent redness, soreness, peeling or barrier disruption
• Prolonged direct sunlight will be difficult to avoid
• Heat, sweating, swimming or wind is aggravating irritation
• A stronger concentration has recently been introduced
• Other skincare treatments have increased skin sensitivity

These circumstances do not create one rule that applies to everyone. If tretinoin has been prescribed, any significant alteration to its frequency or use should be discussed with the prescribing clinician.

What should you do if your skin becomes sunburned?

Tretinoin should not be applied to sunburned skin. Current product instructions generally advise withholding treatment until the skin has recovered because sunburned skin may be considerably more vulnerable to irritation.

Do not attempt to treat peeling caused by sunburn with additional exfoliating ingredients. Keep the routine simple, avoid further sun exposure and seek clinical advice if the reaction is severe, blistering, painful or slow to resolve.

Once the skin has recovered, the prescriber can advise whether tretinoin should be resumed at the previous frequency or reintroduced more gradually.

How to protect tretinoin-treated skin in summer

Use high-protection broad-spectrum sunscreen

Apply a broad-spectrum sunscreen offering high UVB and UVA protection every morning. Many clinicians recommend SPF 50 for people using tretinoin, particularly where pigmentation, melasma or photoageing is being managed.

Use enough product to cover all exposed skin and reapply according to the sunscreen instructions, particularly after swimming, heavy sweating, towelling or prolonged time outdoors.

Use shade, clothing and a hat

Sunscreen should not be the only form of protection. Shade, a wide-brimmed hat and closely woven clothing reduce direct UV exposure and provide protection that does not depend on perfect sunscreen application.

Apply tretinoin at night

Topical tretinoin is normally applied in the evening. Light can affect the stability of some tretinoin formulations, while nighttime application also separates treatment from daytime UV exposure. Follow the directions supplied with the particular formulation because creams and gels may have different storage and application instructions.

Protect the skin barrier

A simple moisturiser and gentle cleanser can help manage dryness and irritation. Introducing several exfoliating acids, scrubs or other potentially irritating ingredients at the same time may make it more difficult to distinguish normal retinoid adjustment from excessive irritation.

For more detailed application information, see our guide to starting tretinoin.

Can you use tretinoin on a summer holiday?

A holiday does not automatically require tretinoin to be stopped. The decision depends on the destination, expected UV exposure, planned activities, current skin tolerance and the ability to protect treated skin consistently.

Factors that may increase irritation include:

• Long periods on a beach or beside a swimming pool
• Repeated swimming in chlorinated or salt water
• Hot weather and frequent sweating
• Wind exposure during outdoor activities
• Inconsistent sunscreen reapplication
• Using tretinoin on skin that is already red or peeling

If substantial unavoidable sun exposure is expected, ask the prescriber for individual advice before travelling rather than making an abrupt change immediately before the holiday.

Should you restart tretinoin immediately after a holiday?

If tretinoin has been paused, it should not be restarted while the skin remains sunburned, inflamed or significantly irritated. Depending on the length of the interruption and previous tolerance, the prescriber may recommend resuming at a reduced frequency rather than returning immediately to the former schedule.

People who previously experienced considerable irritation may undergo another adjustment period after a prolonged interruption. Our article about the tretinoin purge and adjustment period explains the difference between expected early changes and reactions that require clinical advice.

Does tretinoin stop working in sunlight?

Some tretinoin formulations are sensitive to light, which is one reason they are normally applied at night and supplied in protective packaging. This does not mean that every incidental exposure to daylight cancels the treatment or that tretinoin cannot be used during months with longer daylight hours.

Keep the medicine in its original packaging and follow the stated storage conditions. Avoid leaving it in direct sunlight, on a hot windowsill or inside a vehicle where temperatures may rise considerably.

Tretinoin cream versus gel during summer

Both cream and gel formulations contain the same active ingredient, but the formulation can affect how the product feels and how well it is tolerated. Some gels may feel lighter in warm weather but can be more drying for certain skin types. Cream formulations may feel more emollient but are not automatically suitable for everyone.

Changing from cream to gel—or from gel to cream—is a formulation change and should not be treated as a purely cosmetic substitution. The prescribed product, concentration and directions should be followed.

For an explanation of the different concentrations, see our comparison of tretinoin 0.025%, 0.05% and 0.1%.

Can you use retinol during summer?

Retinol can also be used during summer, provided it is tolerated and accompanied by appropriate sun protection. Unlike tretinoin, retinol is used in cosmetic skincare products and does not require a prescription. Its concentration, formulation and stability can vary considerably between products.

Retinol can still cause dryness, redness and peeling, especially when first introduced or combined with other active ingredients. The fact that it is available without prescription does not mean that irritation or sun protection can be disregarded.

Tretinoin and retinol in summer: key differences

Frequently asked questions

Can you use tretinoin throughout the summer?

Many people use prescribed tretinoin throughout the year. Summer does not automatically require discontinuation, but unnecessary UV exposure should be minimised and the skin should be protected with sunscreen, clothing and shade.

Should I stop tretinoin before going on holiday?

Not automatically. The appropriate approach depends on current irritation, the destination, expected sun exposure and the ability to maintain reliable UV protection. Ask the prescriber before making a significant change to the prescribed schedule.

Can I apply tretinoin if I have sunburn?

No. Tretinoin should not be applied to sunburned skin. Wait until the skin has recovered and contact the prescriber if you are uncertain about when or how to restart.

What SPF should I use with tretinoin?

Use a broad-spectrum sunscreen with high UVB and UVA protection. Many clinicians recommend SPF 50 for tretinoin-treated skin, accompanied by shade, protective clothing and appropriate reapplication.

Does applying tretinoin at night prevent sun sensitivity?

Nighttime application is appropriate, but it does not replace daytime sun protection. Irritation and increased vulnerability to sunburn can still affect the skin during the following day.

Can I use tretinoin after swimming?

Swimming itself does not create a universal prohibition, but chlorine, salt water, sun and repeated washing can increase dryness or irritation. Tretinoin should only be applied once the skin is clean, completely dry and free from sunburn or significant irritation.

Is tretinoin more dangerous in hot weather?

Heat does not automatically make tretinoin unsafe, but sweating, sun exposure and environmental dryness can make irritated skin harder to manage. Storage temperatures should also be observed because excessive heat may affect the formulation.

Can retinol be used in summer without sunscreen?

Daily sun protection remains important when using retinol. Retinol can cause irritation, and unprotected UV exposure contributes independently to pigmentation, photoageing and skin damage.

Related clinical information: Tretinoin: uses, strengths, formulations and UK status .

Related tretinoin product information

The following pages contain factual information about individual tretinoin formulations and concentrations:

• Obagi Tretinoin 0.025% Cream product information
• Ketrel 0.05% Tretinoin Cream product information
• Obagi Tretinoin 0.05% Cream product information
• Obagi Tretinoin Gel 0.05% product information
• Retin-A 0.1% Tretinoin Cream product information
• Retirides 0.1% Tretinoin Cream product information
• Obagi Tretinoin 0.1% Cream product information

Clinical conclusion

Tretinoin and retinol do not become automatically unsuitable when summer begins. The relevant questions are whether the skin is tolerating treatment, whether it can be protected reliably from UV exposure and whether sunburn or significant irritation is present. Prescribed tretinoin should be used in accordance with the individual treatment plan rather than stopped or altered solely because of the season.

“The calendar alone is not usually the deciding factor. We consider the condition of the skin, the expected level of ultraviolet exposure and whether effective sun protection is practical. Tretinoin should not be applied to sunburned or significantly irritated skin, and changes to a prescribed regimen should be discussed with the prescriber.”

Dr Rosie Sutton, Founder & Medical Director, Tweak East

Clinically reviewed by Dr Rosie Sutton, Founder & Medical Director, Tweak East.