Formulation Review: Water-Based Anti-Aging Serum & Anti-Aging Cream

Question

I am seeking an expert review for two cosmetic formulations I have developed: a Water-Based Anti-Aging Serum and an Anti-Aging Cream. For both formulations, I need an assessment of their stability, feasibility, efficacy, rheology, and solubility steps and tips. Please also advise if any other ingredients are needed.

Here are the detailed formulations:

1. Water-Based Anti-Aging Serum

(Hydration, soothing, antioxidant boost)*
Total batch: 50 g

Phase A – Water Base (Room Temp)

Distilled Water – q.s. to 100% (≈ 33.75 g after other additions)
Galactomyces Ferment – 5% → 2.50 g
Centella Asiatica Extract – 1% → 0.50 g
Ectoine – 2% → 1.00 g
Sodium PCA 50% – 2% → 1.00 g
Dipotassium Glycyrrhizate – 0.5% → 0.25 g
MYFerment™ Balance – 3% → 1.50 g
Pure-Oryzanol™ – 0.5% → 0.25 g

Phase B – Cool-down

SOD-Wasabi™ – 3% → 1.50 g
Ume Extract – 2% → 1.00 g
Acetyl Zingerone – 0.5% → 0.25 g
Preservative – per supplier (≈0.5–1%)

pH adjuster: Sodium Citrate or Citric Acid to pH 5.0–5.5

Stability & Notes:

Fully water-based → stable with cool processing.
Antioxidant + calming actives for post-exfoliation or daily AM use.

2. Anti-Aging Cream

(Wrinkles, Elasticity, Pores)*
(Barrier-support + high-performance DNA & peptide actives)*
Total batch: 100 g

Phase A – Water Phase (Heat to ~75°C)

Distilled Water – q.s. to 100% (≈ 34.50 g after other additions)
GABA (Gamma Aminobutyric Acid) – 1% → 1.00 g
Alpha-Ketoglutarate – 1% → 1.00 g

Phase B – Oil Phase (~75°C)

Squalane – 5% → 5.00 g
Cetearyl Olivate + Sorbitan Olivate (Olivem 1000) – 4% → 4.00 g
Caprylic/Capric Glycerides – 3% → 3.00 g
CocoSilk™ – 2% → 2.00 g

Phase C – Cool-down (<40°C)

HRC-4000™ – 10% → 10.00 g
Salmon DNA (PDRN stock) – 10% → 10.00 g
Pure-Adenosine™ – 0.5% → 0.50 g
Acetyl Zingerone – 1% → 1.00 g
Centella Asiatica Extract – 1% → 1.00 g
Ume Extract – 2% → 2.00 g

Preservative – per supplier (≈0.5–1%)

pH adjuster: Sodium Citrate or Citric Acid to pH 5.0–5.5

MySkinRecipes Expert · Accepted Answer

We've reviewed your proposed formulations for the Water-Based Anti-Aging Serum and the Anti-Aging Cream. Here's a detailed analysis regarding stability, feasibility, efficacy, rheology, and solubility, along with our recommendations:

1. Water-Based Anti-Aging Serum

Stability & Feasibility:

Galactomyces Ferment, Centella Asiatica Extract, Ectoine, Sodium PCA 50%, Dipotassium Glycyrrhizate, MYFerment™ Balance, SOD-Wasabi™, Ume Extract: These ingredients are generally compatible with your proposed water-based, room temperature/cool-down processing. Their solubility in water and temperature sensitivities align with your plan.
Pure-Oryzanol™: This is the primary concern for this formulation. Our Pure-Oryzanol™ is oil-soluble and will not dissolve in a water-based serum. This will lead to instability, cloudiness, and potential separation.
Acetyl Zingerone: The specific product description for Acetyl Zingerone is not available in our database, so its solubility and stability in this context cannot be fully confirmed.

Efficacy:

The combination of Galactomyces Ferment, Centella Asiatica Extract, Ectoine, Sodium PCA, Dipotassium Glycyrrhizate, MYFerment™ Balance, SOD-Wasabi™, and Ume Extract provides a strong blend of hydrating, soothing, and antioxidant properties, aligning well with your serum's goals.

Rheology & Solubility Tips:

Pure-Oryzanol™: We recommend replacing Pure-Oryzanol™ with a water-soluble antioxidant to maintain the clear, water-based nature of your serum. Alternatively, if Pure-Oryzanol™ is essential, you would need to incorporate a suitable solubilizer (e.g., PEG-40 Hydrogenated Castor Oil, Polysorbate 20) in Phase A. This may affect the clarity of the serum.
Dipotassium Glycyrrhizate: Be aware that Dipotassium Glycyrrhizate has a mild electrolyte nature and may cause the formula to become slightly less viscous. If a thicker serum is desired, consider adding a water-soluble thickener (e.g., Xanthan Gum, Carbomer) to Phase A.
Acetyl Zingerone: We advise confirming the solubility and stability of Acetyl Zingerone with its supplier or choosing an alternative active with known properties for water-based formulations.

2. Anti-Aging Cream

Stability & Feasibility:

Squalane, Olivem 1000, Caprylic/Capric Glycerides, CocoSilk™: These oil-phase ingredients are compatible with heating to 75°C for emulsification. Olivem 1000 is an excellent emulsifier for creating stable creams.
HRC-4000™, Salmon DNA, Pure-Adenosine™, Centella Asiatica Extract, Ume Extract: These cool-down phase ingredients are generally heat-sensitive and are correctly placed in Phase C, to be added below 40°C.
GABA (Gamma Aminobutyric Acid): Our GABA products (both synthetic and natural bioferment) should not be heated for more than 5 minutes. Your current plan to include it in Phase A (heated to ~75°C) is not ideal and could lead to degradation, reducing its efficacy.
Alpha-Ketoglutarate: While its description doesn't explicitly prohibit heating, its solubility is noted at room temperature. For optimal stability and efficacy, it's generally safer to add it in the cool-down phase.
Acetyl Zingerone: As with the serum, the specific product description for Acetyl Zingerone is not available, so its compatibility with the cream formulation cannot be fully confirmed.

Efficacy:

This cream formulation features a robust blend of actives like GABA, Alpha-Ketoglutarate, HRC-4000™, Salmon DNA, Pure-Adenosine™, Centella Asiatica Extract, and Ume Extract, targeting wrinkles, elasticity, and pores effectively. The concentrations are appropriate for their intended benefits.

Rheology & Solubility Tips:

GABA: We strongly recommend moving GABA from Phase A to Phase C. Add it to the cream after the emulsion has formed and cooled below 40°C to preserve its integrity and efficacy.
Alpha-Ketoglutarate: For best practice, we suggest moving Alpha-Ketoglutarate to Phase C as well, adding it during the cool-down phase to ensure its stability.
Acetyl Zingerone: Please confirm the solubility and stability of Acetyl Zingerone or consider an alternative with confirmed properties for emulsion systems.

General Formulation Tips for Both Products:

Preservative System: Ensure the chosen preservative system is broad-spectrum and effective within the target pH range of 5.0-5.5. It must also be compatible with all active ingredients, especially the ferment extracts.
pH Adjustment: Always perform pH adjustment at the end of the formulation process, once all ingredients are incorporated and the product has cooled to room temperature.
Stability Testing: We highly recommend conducting comprehensive stability testing on your final products, including accelerated stability tests, freeze-thaw cycles, and shelf-life studies, to ensure their long-term integrity and performance.

You can find links to all mentioned products below this answer.