Three names can appear on the same ingredient list and still do very different jobs. Tranexamic acid, alpha arbutin and kojic dipalmitate all belong in the conversation about uneven-looking pigmentation, but treating them as interchangeable 'whitening ingredients' misses the science. Here is what makes each one distinct, and where SESH True Tone Serum fits into the picture.
First, a quick explanation of melanin
Melanin gives skin its natural colour. When sun exposure, hormones, inflammation or injury stimulate extra pigment in certain areas, the result may be dark marks or patches. Tyrosinase is one enzyme involved in the biochemical process of creating melanin, but it is not the entire process. This is why a formula may combine ingredients that act through different proposed routes.
Tranexamic acid: an interest in pigment signaling
Tranexamic acid is not an exfoliating acid. Topically, it has been investigated for its potential to influence signaling linked to inflammation, UV exposure and excess pigmentation. Some clinical studies and reviews report benefits for melasma and other pigmentation concerns, although protocols and formulations vary substantially.
What it does not mean: the presence of tranexamic acid is not a guarantee that any serum will erase melasma, nor should topical skincare be confused with oral tranexamic acid, which is a prescription medicine with different considerations.
Alpha arbutin: a tyrosinase-related approach
Alpha arbutin is a cosmetic brightening ingredient associated with inhibition of pathways involved in melanin synthesis, particularly tyrosinase. It is often included in leave-on products designed for uneven tone. Actual results depend on the formula, concentration, routine and cause of discoloration.
It is a category mistake to claim that more brightening ingredients always equal faster fading. Skin tolerability and sustained use are more important than stacking an unlimited number of actives.
Kojic dipalmitate: related to, but not identical to, kojic acid
Kojic dipalmitate is an esterified derivative of kojic acid. Formulators may use it for its different stability and formulation characteristics. Kojic acid has been studied for inhibiting tyrosinase; however, evidence on kojic acid cannot simply be transferred one-to-one to kojic dipalmitate. The European Commission's safety opinion on kojic acid specifically did not assess its dipalmitate derivative.
Why a multi-ingredient formula can be useful
SESH True Tone brings these three ingredients together with Hentowhite, liposomal glutathione and supportive ingredients. This is a sensible product-development direction: targeting multiple parts of an uneven-tone routine rather than relying on one famous name. Yet ingredient-level research does not equal a published clinical trial on the complete serum. Expectations should reflect that distinction.
Where do lactic acid and hydration fit?
The product also contains lactic acid, papaya extract and conditioning ingredients such as sodium hyaluronate. Lactic acid is an alpha-hydroxy acid whose exfoliating effect depends on concentration and formulation pH; we cannot infer the strength of this product from its ingredient list. Hydrating ingredients help support comfort, which matters when irritation itself can worsen the look of pigmentation.
Which ingredient should you choose?
- For a simple routine: choose a well-formulated product you can use consistently rather than buying every individual active.
- For very sensitive skin: patch test and introduce one new product at a time.
- For persistent melasma or spreading pigmentation: seek dermatologist guidance, because the diagnosis affects the treatment plan.
- For any dark-spot routine: build daytime sunscreen into the plan.
Read the full formula
See the ingredient list for SESH True Tone Serum, compare with our existing tranexamic acid vs alpha arbutin guide, or explore the brand's ingredient dictionary for individual ingredient profiles.
Sources: systematic review and meta-analysis of topical melasma treatments; European Commission scientific opinion on kojic acid and its assessment scope. Research discussed here does not establish product-specific clinical outcomes.
