Does microneedling work for wrinkles and scars?
Microneedling demonstrably works for wrinkles and acne scars, with radiofrequency microneedling being the variant with the strongest evidence base. Combining it with PRP can enhance results, but make sure you are well informed about side effects and choose an experienced practitioner.
Standard microneedling shows noticeable improvement for atrophic acne scars (the sunken scars that acne leaves behind) and wrinkles across multiple clinical studies. The results are comparable to other treatments such as lasers or chemical peels, but the recovery time is shorter and the side effects are milder. The methodological quality of the studies is not optimal, so firm guarantees cannot yet be given.
Radiofrequency microneedling, in which the needles simultaneously deliver heat energy deep into the skin, appears to work somewhat more effectively than standard microneedling. The effect builds up slowly and continues to improve for up to six months after treatment. This type of treatment has also proven safe for people with darker skin tones, which with some other techniques carries a risk of pigmentation spots.
Combining microneedling with PRP (platelet-rich plasma derived from the patient's own blood) or stem cell exosomes (cell-free particles that stimulate collagen production) yielded significant added benefit over microneedling with saline alone in studies. Wrinkles, elasticity, hydration and pigmentation all improved to a greater degree. PRP and exosomes performed comparably to each other. No serious side effects were reported in these specific studies. Note: the overall quality of evidence for PRP combinations remains limited; the studies are small and methodologically variable, meaning the optimal dosage and treatment interval are still unknown.
In combination treatments that also involve biostimulators, substances that prompt the skin to produce collagen, side effects such as redness and bruising occurred in 15 to 30% of cases. Rare but serious complications such as inflammatory nodules and vascular occlusion have also been described. The studies on this type of combination treatment are small and difficult to compare with one another, which makes the conclusions less reliable.
Based on multiple clinical studies and reviews, including randomised and blinded trials on standard microneedling and radiofrequency microneedling. PRP combinations and biostimulator combinations have been investigated primarily in small or methodologically limited studies.
Does taking collagen supplements actually work against wrinkles?
Hydrolysed collagen reduces wrinkles and can improve hydration and elasticity. Take 2.5 to 5 grams per day for at least 8 to 12 weeks, and choose a product with 'collagen peptides' or 'hydrolysed collagen' on the label. Marketing promises about spectacular skin rejuvenation are exaggerated.
Does retinol help against wrinkles?
Retinol demonstrably works against wrinkles and improves skin texture, although tretinoin is more potent for those who can or wish to obtain a prescription; people who experience irritation may consider bakuchiol as an equivalent alternative based on one small study.
What are the benefits and risks of microneedling?
Microneedling is best supported by evidence for atrophic acne scars, with consistent positive results across multiple randomised studies. For other skin concerns the indications are promising but less certain, and those with darker skin tones would be wise to discuss the risk of dark spots with a dermatologist beforehand.
Is retinol safe to use after microneedling?
Whether retinol is safe to use directly after microneedling has not been directly studied. Discuss the timing and dosage with your practitioner before applying it.
Does snail slime help reduce scars?
Snail slime shows promising properties for skin repair in the laboratory, but there is as yet no clinical evidence that it also reduces scars in humans. You can try it cautiously, but do not expect a proven result and watch for skin reactions.
Do AHAs or BHAs really help against wrinkles and blemishes?
Both AHA (glycolic acid) and BHA (salicylic acid) demonstrably help against acne, blemishes and, to a lesser extent, wrinkles, although the effect varies from person to person. For acne, salicylic acid has the strongest evidence base, particularly for darker skin tones.