Chlorophyll, the pigment that makes plants green, does show some real promise for skin health, but the evidence is stronger for topical application than for the liquid chlorophyll drinks trending on social media. Most of the clinical research involves a modified form called chlorophyllin (specifically sodium copper chlorophyllin), which is more stable and easier for skin to absorb than the natural version found in plants.
What Topical Chlorophyll Can Do
The best-supported skin benefits come from applying chlorophyll-based products directly to your skin rather than drinking them. A study published in the Journal of Drugs in Dermatology tested a topical gel containing sodium copper chlorophyllin on women with sun-damaged facial skin. After eight weeks of twice-daily application, all clinical measures of skin quality showed statistically significant improvements over baseline, including fine lines, roughness, and overall photodamage. The study was small (ten participants completed it), but the results were consistent across all subjects.
Chlorophyllin also appears to help with acne. A randomized study published in the Journal of the American Academy of Dermatology used chlorophyll-based photodynamic therapy on one side of participants’ faces while treating the other side with light therapy alone. After eight sessions over four weeks, the chlorophyll-treated side showed significant reductions in acne lesion counts, acne severity grades, and oil production compared to the light-only side. The combination of chlorophyll’s light-absorbing properties and its effects on oil glands likely explain why it outperformed light therapy on its own.
Wound Healing and Odor Control
Sodium copper chlorophyllin has a long history of use in wound care. It promotes the formation of healthy new tissue, helps control inflammation, and reduces wound odor. These properties have made it a common ingredient in clinical wound-care formulations, often combined with other healing agents. The odor-reducing ability appears tied to chlorophyllin’s antioxidant properties, which neutralize the compounds responsible for unpleasant smells as tissue breaks down. While most people searching for skin benefits aren’t dealing with open wounds, these same anti-inflammatory and tissue-supporting effects are part of why chlorophyllin shows up in skincare products.
Drinking Chlorophyll for Skin: Less Evidence
Liquid chlorophyll supplements have exploded in popularity, with claims that drinking them clears acne, brightens skin, and slows aging. The reality is less exciting. There’s very little clinical evidence that ingesting chlorophyll produces meaningful skin improvements. When you drink liquid chlorophyll (usually chlorophyllin dissolved in water), it passes through your digestive system. How much of it reaches your skin in an active form is unclear, and no well-designed studies have demonstrated that oral chlorophyll supplements improve acne, wrinkles, or skin tone.
That doesn’t mean it’s impossible. Chlorophyllin does have antioxidant properties, and antioxidants in general can support skin health from the inside. But the gap between “theoretically plausible” and “clinically proven” is wide. If your primary goal is better skin, topical chlorophyll products have a much stronger evidence base than drinkable ones.
Side Effects Worth Knowing About
Chlorophyll and chlorophyllin are generally safe, but there’s one side effect that’s particularly relevant if you’re using them for skin: photosensitivity. Chlorophyll absorbs light. That’s its entire biological purpose. When it’s present in or on your skin, it can make you more sensitive to UV radiation, increasing your risk of sunburn.
This isn’t just a theoretical concern. A case series documented four patients who developed pseudoporphyria, a condition involving skin blistering and fragility triggered by light exposure, after using chlorophyll. In those cases, the photosensitivity persisted even after they stopped taking it. Children’s Hospital of Philadelphia specifically notes that sun protection is important for anyone using chlorophyllin supplements.
If you’re using chlorophyll topically or taking it orally, consistent sunscreen use becomes non-negotiable. This is especially worth considering because many people interested in chlorophyll for skin are also trying to reduce sun damage. Using a product that increases UV sensitivity without adequate sun protection could work against you.
Other side effects of oral chlorophyllin are mild: green-tinted urine or stool (harmless but surprising if you’re not expecting it) and occasional digestive upset.
Topical vs. Oral: What Makes Sense
If you want to try chlorophyll for your skin, a topical product is the more logical choice. You’re delivering it directly where you want it to work, the clinical studies showing real results used topical formulations, and you avoid the uncertainty of whether an oral supplement will reach your skin in any useful concentration. Look for products listing sodium copper chlorophyllin as an ingredient, since that’s the form used in most of the research.
Topical chlorophyllin isn’t a replacement for proven skincare staples like sunscreen, retinoids, or vitamin C. But as an add-on, particularly for sun-damaged skin or mild acne, the early evidence suggests it can offer real, if modest, benefits. Just pair it with good sun protection, because the same light-absorbing chemistry that makes chlorophyll useful in plants can make your skin more vulnerable to the sun.