By Aliki Chatzilias, MSc.
Clinical Biochemist/Medical Researcher


In the realm of skincare, the synergy between advanced technologies and potent skincare formulations has revolutionized the way we address various skin concerns. One such groundbreaking technique gaining traction is LED light therapy, a non-invasive treatment that utilizes different wavelengths of light to target specific skin issues. Equally pivotal in any skincare aficionado's arsenal are serums, concentrated formulations designed to penetrate deeper layers of the skin, delivering potent active ingredients for optimal results. Amidst the fervor surrounding these two skincare powerhouses, a common query emerges: Do you use serum before or after LED light therapy? In this comprehensive guide, we delve deep into the science behind LED light therapy, explore the intricacies of serums, and unravel the debate surrounding their optimal application sequence.


Understanding LED Light Therapy

What is LED Light Therapy?

LED light therapy, also known as phototherapy or low-level light therapy (LLLT), involves the use of different wavelengths of light to penetrate the skin at varying depths. These wavelengths stimulate cellular activity, triggering various biochemical responses in the skin.

How Does LED Light Therapy Work?

LED light therapy works by harnessing the power of specific wavelengths of light to target different skin concerns. For instance, blue light is effective in combating acne-causing bacteria, while red light stimulates collagen production, reducing the appearance of fine lines and wrinkles.

Benefits of LED Light Therapy for the Skin

The benefits of LED light therapy are manifold. It can help reduce acne inflammation, promote wound healing, improve skin texture and tone, and boost collagen production, resulting in firmer, more youthful-looking skin.


The Role of Serums in Skincare

What are Serums?

Serums are lightweight, fast-absorbing formulations that contain high concentrations of active ingredients such as vitamins, antioxidants, and peptides. Due to their molecular structure, serums can penetrate deeper into the skin, delivering potent ingredients directly to the target cells.

Types of Serums and Their Functions

Serums come in various formulations targeting specific skin concerns, including hydration, brightening, anti-aging, and blemish control. Ingredients like hyaluronic acid, vitamin C, retinol, and niacinamide are commonly found in serums, each offering unique benefits for the skin.

Importance of Serums in Skincare Routines

Serums play a crucial role in any skincare routine, providing targeted solutions for specific skin issues. Their lightweight consistency makes them ideal for layering with other skincare products, allowing for customized treatment regimens tailored to individual needs.


Preparing for LED Light Therapy

Cleansing the Skin

Before undergoing LED light therapy, it is essential to start with a clean canvas. Cleansing the skin removes dirt, oil, and impurities, ensuring optimal penetration of light and skincare products.

Application of Serums: Before or After?

The question of whether to use serum before or after LED light therapy often arises, prompting debate among skincare enthusiasts and professionals alike. While some advocate for applying serum before the treatment to enhance ingredient absorption, others suggest applying it afterward to seal in the benefits.

Factors to Consider in Serum Selection

When selecting a serum for use in conjunction with LED light therapy, several factors should be taken into account, including skin type, specific concerns, and compatibility with other skincare products. Opting for serums with ingredients that complement the benefits of LED light therapy can enhance overall treatment outcomes.


The Debate: Using Serum Before or After LED Light Therapy

Arguments for Using Serum Before LED Light Therapy

Proponents of applying serum before LED light therapy argue that doing so allows for better absorption of active ingredients, priming the skin for optimal results. By prepping the skin with a serum, the subsequent light therapy session can penetrate deeper, maximizing efficacy.

Arguments for Using Serum After LED Light Therapy

Conversely, advocates for applying serum after LED light therapy contend that doing so helps lock in the benefits of the treatment, ensuring prolonged exposure of the skin to active ingredients. Additionally, post-treatment serums can soothe and hydrate the skin, counteracting any potential irritation.

Expert Opinions and Recommendations

While opinions may vary, skincare experts generally agree that the optimal sequence of serum application depends on individual skin concerns and treatment goals. Consulting with a skincare professional can provide personalized guidance tailored to specific needs.


Best Practices for Serum and LED Light Therapy Combination

Personalized Skincare Routines

Tailoring skincare routines to individual needs is paramount for achieving optimal results. Experimenting with different combinations of serums and LED light therapy sessions can help identify the most effective regimen for achieving desired outcomes.

Tips for Maximizing the Benefits of Both Treatments

To maximize the benefits of serums and LED light therapy, consistency is key. Incorporating these treatments into a daily skincare routine and adhering to recommended usage guidelines can yield noticeable improvements in skin health and appearance over time.

Common Mistakes to Avoid

Avoiding common pitfalls such as overusing active ingredients, neglecting sunscreen protection, and expecting immediate results is crucial for maintaining skin health and preventing potential adverse reactions.



In conclusion, the debate over whether to use serum before or after LED light therapy underscores the importance of understanding the intricate interplay between skincare products and treatments. By leveraging the benefits of both serums and LED light therapy in a strategic manner, individuals can unlock the full potential of their skincare routines, achieving radiant, healthy-looking skin. Whether it's applying serums before or after LED light therapy, the ultimate goal remains the same: to nurture and nourish the skin, ensuring its optimal health and vitality for years to come.