Research review
Does magnesium glycinate help with skin disease?
The largest dataset on magnesium and skin is an association between low blood magnesium and higher risk of psoriasis and atopic dermatitis — not acne, and not a supplementation trial. The one randomized trial that measured acne found no effect from oral magnesium.
The evidence doesn't support magnesium glycinate, or any form of magnesium, as a treatment for acne, psoriasis or eczema. The only randomized trial that measured acne found no effect, and the largest dataset on skin and magnesium is an association between blood levels and disease risk in medical records — not a supplementation trial.
What the evidence doesn't support
It doesn't support magnesium glycinate as a treatment for acne, psoriasis or atopic dermatitis (eczema), and it doesn't support the idea that magnesium glycinate causes acne breakouts either — no trial reviewed here reported that. It also doesn't turn an association into a cause: the large dataset below links low blood magnesium to two skin conditions, but a blood-level association isn't evidence that taking a magnesium supplement changes a person's risk.
What the trials found
The largest dataset comes from a 2026 multicenter cohort study using electronic health records from the TriNetX network (Chalupczak et al., Dermatology Online Journal). Adults aged 18–65 with low blood magnesium (246,648 people) were matched to controls with normal levels, and adults with high blood magnesium (86,649 people) were matched separately. Low magnesium was associated with a higher risk of psoriasis (risk ratio 1.17) and atopic dermatitis (risk ratio 1.09), but not with acne (risk ratio 0.97, not statistically significant). High magnesium wasn't associated with any of the three. This is an association between a blood test result and a diagnosis in medical records, not a trial of supplementation — it can't say whether raising magnesium levels would change anyone's risk.
The one randomized trial that measured acne as an outcome gave 250 mg/day of magnesium oxide — not glycinate — to 32 women with polycystic ovary syndrome for 10 weeks, against 32 on placebo (Jaripur et al. 2022, Reproductive Biology and Endocrinology). Acne severity, scored with a standardized grading system, didn't differ between groups. The same trial found a real benefit elsewhere — total quality-of-life scores improved significantly with magnesium — but not on acne, hair loss, or abnormal bleeding, the three skin- and hormone-related complications it also measured.
No trial has tested oral magnesium glycinate against a placebo for acne, psoriasis or eczema in a general population. Everything above is either an association in blood-test data, or a trial in a different form (oxide) and a different population (women with PCOS) that found no effect on the skin outcome it measured.
| Study | Design | Population | Skin finding |
|---|---|---|---|
| Chalupczak 2026 | Matched cohort, 333,297 adults | General adult population | Low magnesium linked to higher psoriasis and atopic dermatitis risk; not acne |
| Jaripur 2022 | RCT, 250 mg/day magnesium oxide, 10 weeks | 64 women with PCOS | No effect on acne severity |
Questions people ask
Does magnesium glycinate cause acne?
No trial or dataset reviewed here found that. The largest study — a matched cohort of over 300,000 people — found no association between low blood magnesium and acne risk, and the one randomized trial that measured acne found no change in either direction from oral magnesium.
Does magnesium glycinate help clear acne?
The one trial that measured it found no significant effect on acne severity, at 250 mg/day of magnesium oxide over 10 weeks in women with PCOS. No trial has tested magnesium glycinate on acne specifically.
Can magnesium help psoriasis or eczema?
Low blood magnesium was associated with a higher risk of both conditions in one large observational study, but that's not the same as a trial showing that supplementation lowers the risk or changes symptoms — no such trial exists yet.
When to talk to a doctor
Acne, psoriasis and eczema are diagnosed by a doctor or dermatologist, and range from a cosmetic concern to a chronic inflammatory condition depending on severity. Magnesium glycinate is not a treatment for acne, psoriasis or eczema, and nothing in the evidence above supports using it in place of a dermatology visit for skin that's worsening, painful, or not responding to over-the-counter care.
Related reading: who shouldn't take magnesium glycinate, magnesium glycinate dosage, and magnesium glycinate side effects.
Sources
- Magnesium dysregulation and risk of inflammatory skin disease: A multicenter cohort study In a matched cohort of over 300,000 people, low blood magnesium was associated with a higher risk of psoriasis and atopic dermatitis but not acne; this is an association in medical-record data, not a supplementation trial.
- The effects of magnesium supplementation on abnormal uterine bleeding, alopecia, quality of life, and acne in women with polycystic ovary syndrome: a randomized clinical trial In women with PCOS, 250 mg/day of magnesium oxide for 10 weeks improved quality-of-life scores but had no significant effect on acne severity, hair loss, or abnormal bleeding.
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.