Oak CO2 Extract (bark) 5 g

Why Oak Bark CO2 Extract Belongs in Astringent Skincare Formulas

Oak CO2 extract is produced through supercritical carbon dioxide extraction of tree bark, a method that preserves the full complex of natural tannins, flavonoids and phenolic compounds without heat degradation or residual solvents. Formulators value this extraction technique precisely because it delivers a clean, stable concentrate that holds its properties well over storage time. This product belongs to the CO2 Extracts category, which brings together concentrated botanical extracts for professional development of skincare and specialty formulations. The 5 gram size is intended for home cosmetic making and small trial batches, letting formulators test the ingredient before committing to a larger purchase volume.

The main application of oak bark extract lies in skincare for oily and blemish-prone skin, hair care products targeting excess scalp oiliness, and oral care formulations along with astringent-focused product lines. The tannins found in bark have long been used in formulations to visibly tighten pores, reduce excess sebum, and create a firming sensation on skin, which is why the extract commonly appears in toners, masks, creams for problem skin, and pre and post shave products. In shampoo and conditioner manufacturing, this concentrate performs well alongside other botanical extracts, pairing particularly nicely with Chamomile officinalis CO2 Extract, which softens the astringent effect of oak and adds a calming quality to the blend.

Recommended dosage of oak extract in finished formulations ranges from 0.1 to 0.5 percent of total mass, and it should be introduced during the cooling stage of an emulsion or base, at temperatures no higher than 40 degrees Celsius, to protect the active compounds from degradation. The extract dissolves well in the oil phase and can be dosed alongside other lipophilic actives, fragrance components and carrier oils. In formulas aimed at gentler care, oak extract is often combined with milder botanical concentrates such as Parsley CO2 Extract, which contributes a brightening, toning effect without amplifying the tightening sensation.

In food and pharmaceutical industries, oak bark and its concentrates serve as a source of natural tannin compounds, which makes this CO2 extract an interesting raw material for adjacent manufacturing sectors requiring a botanical concentrate with astringent properties. That said, for formulas intended for infant or highly sensitive skin, the concentration of oak extract should be minimized or replaced entirely with milder complexes such as Complex CO2 extract for baby skin, formulated specifically with the heightened sensitivity of young skin in mind.

Store the extract in a tightly sealed container away from direct sunlight, at room temperature, avoiding contact with metal surfaces which can react with tannin compounds. Once opened, use the product within the timeframe indicated by the manufacturer and check the packaging seal between uses.

Mattifying Facial Toner With Oak Bark Extract

Distilled water 85 ml

Witch hazel water 10 ml

Glycerin 3 ml

Oak CO2 extract 0.3 g

Broad spectrum preservative 1 ml