Some supplements taken by mouth may help skin hold moisture, but the supplied review excerpt does not show how much they help. For our Dry Skin community, the main takeaway is promise, not a proven fix. The review brings together animal studies and studies in people. It looks at supplements that may support the skin’s barrier, its outer protective layer. The options include Probiotic Supplementation, which uses helpful live bacteria, and prebiotics, which feed those bacteria. It also covers essential fats, which the body needs from food. Other options include Collagen Peptides, small pieces of collagen protein, and ceramides, fats found in the skin’s barrier. The cited studies include healthy young female students drinking fermented milk. Another tested flaxseed and borage oil supplements in women. A cited review also examined supplements for skin moisture in healthy adults. These are different groups and products, rather than one shared test. The excerpt says several studies suggest improvements in the skin’s barrier. However, it leaves out the table containing study details and results. It gives no group sizes, doses, treatment lengths, or amounts of improvement. That means we cannot rank the options or say how quickly someone might notice a change. Animal findings also do not establish benefits in people. For members already tracking a supplement routine, consistent notes could make community comparisons more useful. A personal log might record tightness, flaking, and itchiness using the same rating scale. Product names, dates, and changes in skin care add context. Those records can show patterns without proving a supplement caused them. Unchanged symptoms are worth sharing, too. What changes, if any, have you recorded in your skin while using a supplement?