Lab Methods / RECIPE LAB

10% citric acid solution

A small working solution for lowering pH in a compatible formula.

Formula reference

Lab Methods10 g final batch

Ingredient photo · see the formula status and amounts below.

Build your reference sheet

10 g final batch

Powder units

Follow the stated batch size and recipe notes. Tick ingredients as you prepare your checklist. Changing units does not change the formula.

Reviewed	Ingredient	Amount
	Citric acid powder, anhydrous	1 g
	Distilled water	9 g

0 of 5 items reviewedYour preparation checklist.

Recipe shopping list

Pack quantities follow the reference amounts above. Tick items you already have. Confirm the formula before purchasing.

Have it	Ingredient needed	Shop packs
	Citric acid powder, anhydrous 1 g	Source separately / confirm specification
	Distilled water 9 g	Source separately / confirm specification

Selected available packs: $0.00 · Shipping calculated with your order.

Only matched products with exact mass amounts are added. Bases, water, unspecified amounts and unavailable items are excluded. Pack cost is not the cost of ingredients used.

Suggested final pH

pH guide coming soon

Check the finished mixture

Measure after all ingredients, preservative and final water have been incorporated and the HA is fully hydrated. Use a calibrated pH meter suitable for the serum or cream, at room temperature.

If adjustment is needed, use a formula-compatible diluted pH adjuster in small, measured additions; mix and remeasure. Recheck after 24 hours at the same temperature. There is no fixed number of drops that works for every batch.

The target must fit every ingredient and the preservative. Reaching it does not establish safety or shelf life.

pH too high? Make a lowering solution →pH too low? Make a raising solution →

Confirm the target and adjuster compatibility before following the guide.

Before preparing this formula

Mixing aid only. Do not apply directly to skin.
Use only with a formula designed for this adjuster. Copper-peptide compatibility needs a dedicated formula.
Wear splash goggles and gloves. Keep away from children.
Make fresh for the current mixing session and discard the remainder; no preservative or stored shelf life is established.

Ask the lab about this formula →

INTERACTIVE REVIEW

Preparation outline

STEP 01
Weigh the water into a clean, suitable container.
STEP 02
Add the citric acid gradually and stir until fully dissolved.
STEP 03
Label: Citric acid 10% w/w — pH DOWN — mixing aid only, with the preparation date.

Use & storage

Topical cosmetic reference only. Keep away from eyes and broken skin. Not for injection, microneedling or lash application.

Confirm preservation, final pH, stability and shelf life for the complete formula. Refrigeration and patch testing do not replace formula safety assessment.

Cosmetic hygiene guidance ↗