What it is
Sodium succinate is a water-soluble organic salt derived from succinic acid, a naturally occurring dicarboxylic acid. In skincare it functions mainly as part of a buffer system, helping hold the formula within a target pH range so other ingredients stay stable and comfortable on skin. It is used at low levels as a supporting additive.
Safety & warnings
At the low levels used for pH control it is generally well tolerated and non-comedogenic. It is not a recognized fragrance allergen.
Origin & sourcing
The sodium salt of succinic acid; succinic acid occurs naturally and is also produced by fermentation or synthesis.
Questions everyone asks
What does sodium succinate do in a sunscreen?
It acts as a buffer, helping keep the product's pH in a stable range so the formula stays consistent and comfortable.
Is sodium succinate an active ingredient?
No. It is a supporting additive for pH control and does not provide sun protection.