Radiation therapy is an essential part of cancer treatment, but it often affects the skin in the treated area. Many patients experience dryness, redness, peeling, and increased sensitivity—commonly known as radiation dermatitis.

So, how should you care for your skin during and after radiation therapy?

The answer focuses on protecting the skin barrier, maintaining hydration, and minimizing irritation while the skin heals.

What Happens to Your Skin During Radiation Therapy?

Radiation damages rapidly dividing cells, including healthy skin cells. This disrupts the skin barrier and reduces the skin’s ability to retain moisture and repair itself.

Clinical research published in Supportive Care in Cancer shows that radiation commonly leads to inflammation, dryness, and impaired barrier function, contributing to visible skin reactions (Bolderston et al., 2006).

Why Gentle Skincare Is Critical

As the skin barrier weakens, it becomes more prone to irritation and delayed healing.

A systematic review in Supportive Care in Cancer found that consistent use of gentle skincare and moisturizers significantly reduces the severity of radiation dermatitis symptoms, including dryness and discomfort (Bolderston et al., 2006).

Additional findings available via PubMed Central show that maintaining hydration improves skin integrity and supports recovery during radiation treatment (Hindley et al., 2014).

Skincare During Radiation Therapy

1. Use a Gentle Cleanser

Cleansing helps remove debris and bacteria, but harsh cleansers can further damage the skin barrier.

Clinical recommendations emphasize using mild, non-irritating cleansers to avoid worsening dryness and inflammation (Bolderston et al., 2006).

Look for:

• Fragrance-free formulas

• Low-lather or non-foaming cleansers

• Hydrating ingredients

2. Moisturize Consistently

Moisturizing is one of the most important steps during radiation therapy.

Evidence from Bolderston et al. (2006) shows that regular application of emollients helps reduce dryness, itching, and overall skin discomfort during treatment.

Hydration supports the skin barrier and helps prevent further breakdown.

3. Minimize Friction and Irritation

Radiated skin is more fragile and sensitive.

Clinical guidance emphasizes reducing external irritation—such as friction, heat, or harsh topical products—to prevent worsening skin reactions (Bolderston et al., 2006).

Avoid:

• Tight clothing over treated areas

• Hot water

• Active ingredients like exfoliating acids

4. Be Careful With Sun Exposure

Radiation-treated skin is more vulnerable to UV damage.

Studies on post-radiation skin response show that UV exposure can worsen inflammation and prolong healing, making protection an important part of recovery (Hindley et al., 2014 via PubMed Central).

Only introduce sunscreen once the skin is no longer broken or severely irritated.

Skincare After Radiation Therapy

Even after treatment ends, the skin remains compromised and requires continued support.

1. Continue Hydration and Barrier Support

Ongoing moisturization helps restore the skin barrier and improve long-term outcomes.

Research available via PubMed Central shows that maintaining hydration post-treatment supports skin recovery and reduces lingering irritation (Hindley et al., 2014).

2. Avoid Harsh Ingredients

Post-radiation skin is still sensitive and prone to irritation.

Avoid:

• Retinoids

• Exfoliating acids

• Alcohol-based products

These ingredients can disrupt healing and increase inflammation.

3. Gradually Reintroduce Active Ingredients

Once the skin has recovered, active ingredients can be reintroduced slowly.

The priority remains:

• Hydration

• Barrier repair

• Minimizing irritation

When to Seek Medical Guidance

If symptoms worsen or include:

• Severe redness

• Open or peeling skin

• Pain or signs of infection

Medical intervention may be required.

Caring for your skin during and after radiation therapy should be simple and intentional.

Focus on:

• Gentle cleansing

• Consistent hydration

• Reducing irritation

Clinical evidence shows that supporting the skin barrier and maintaining moisture are key to reducing radiation-related skin reactions and improving recovery.

Works Cited 

Bolderston, A., Lloyd, N. S., Wong, R. K. S., Holden, L., & Robb-Blenderman, L. (2006). The prevention and management of acute skin reactions related to radiation therapy. Supportive Care in Cancer. Link

Hindley, A., Zain, Z., Wood, L., Whitehead, A., & Sanneh, A. (2014). Mometasone furoate cream reduces acute radiation dermatitis. PubMed Central. link