Tea tree oil is one of those ingredients that must be used correctly – or not at all. It is effective, but in too large a dose it can irritate the skin. Many have tried it undiluted directly on a pimple and ended up with a red patch instead.
The antimicrobial properties of tea tree oil – Melaleuca alternifolia – are well documented. It is particularly effective against C. acnes bacteria, which is one of the factors causing acne. At the same time, it is keratolytic, meaning it can help in the shedding of dead skin cells.
The problem is the concentration. Strong tea tree oil is irritating. Concentrations used in studies vary between 5–20%. In commercial products, the percentage is often much lower.
In Silky Sage, there is a small amount of tea tree oil – just enough for the antimicrobial properties to work without irritation. This doesn't make Silky Sage an acne product specifically, but it is part of the reason why the product also works for impure skin.
Tea tree oil is not suitable for everyone. It is one of the most common cosmetic allergens. If you are allergic to tea tree oil, Silky Sage is not suitable for you – and it is important to know this before trying it.