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Yellowing of Hada Labo + SAP + Alpha Arbutin Mixture

My mixture of Hada Labo lotion, Sodium Ascorbyl Phosphate (SAP) 10%, and Alpha Arbutin 2% turned slightly yellow after about 15 days. What is the reason for this yellowing?

Cosmetics Color Changing Degradation Serum Stability pH Suitability
Posted by non.ant
2014-07-04
Stability and Layering of Vitamin C E Ferulic Serum

What is the stability of `Vitamin C E Ferulic` (L-Ascorbic Acid in a water base) when layered with other skincare products? * How long should I wait after applying `Vitamin C E...

Cosmetics Product Layering Serum Stability Vitamin C Water-based Formulation
Posted by leelavalin
2014-07-04
Colorants Suitable for Mascara Formulations

What types of colorants are suitable for use in mascara formulations? Please provide information on their properties, typical usage percentages, and any specific considerations...

Cosmetics Coloring Dispersion Mascara Pigment Usage Percentage
Posted by pink_pink_69
2014-07-03
Body Gel Formulation for Brightening and Freckle Reduction with Fast Absorption

I am looking for a body lotion formula based on aloe vera that provides significant whitening, clear skin, and noticeable freckle reduction. I also need the product to absorb...

Cosmetics Absorption Freckles Gel Preservation Skin Brightening
Posted by soda9939
2014-07-03
How to Make Reed Diffuser Fragrance Using DPG Base

How to make fragrance for reed diffusers using a Dipropylene Glycol (DPG) base? What is the basic formula and mixing procedure?

Cosmetics Evaporation Control Fragrance Base Fragrance Diffusion Fragrance Formulation Reed Diffuser
Posted by alinjungbay
2014-07-02
pH Adjustment for Facial Wash Gel with Lauryl Glucoside

I am making a 100g batch of facial wash gel containing `Lauryl Glucoside`. I need to adjust the pH to be within the range of 5-6. How can I determine the correct percentage of...

Cosmetics Facial Cleanser Formulation Adjustment Gel Mixing Procedure pH Adjustment
Posted by chanapa
2014-07-02
Concentration and Effects of Pure MSM™

What is the recommended concentration for Pure MSM™ for oil control and exfoliation? What effect is primarily achieved when using Pure MSM™ at a 5% concentration?

Cosmetics Concentration Exfoliation Ingredient Function Oil Control Usage Percentage
Posted by tanik_fu
2014-07-02
Replacing Lauryl Glucoside with Coco Wash/Coco-Betaine in Facial Cleanser

I want to replace Lauryl Glucoside in a facial cleanser formulation to make pH adjustment easier. I was considering using Coco Wash (PEG-7 Glyceryl Cocoate), but also heard...

Cosmetics Facial Cleanser Foaming Formulation Adjustment Gentle Formulation Surfactant
Posted by korea-kon
2014-07-02
Analysis of a Serum Formula for Combination/Sensitive Skin: Texture and Feel Over Time

I have formulated a serum with the following key ingredients: Argireline, Matrixyl 3000, Niacinamide 5%, Green Tea, Allantoin, Bisabolol, Calendula, Licorice, Sea Kelp...

Cosmetics Anti-aging Combination Skin Sensitive Skin Serum Stickiness
Posted by omasign
2014-07-02
Difference and Uses of Squalene vs Squalane

What is the difference between Squalene and Squalane, and what are their respective uses in cosmetic formulations?

Cosmetics Ingredient Comparison Oil-based Formulation Skin Conditioning Stability Texture
Posted by nbinnima
2014-07-02
Gentle Feminine Wash Formulation Principles

I am looking for guidance on formulating a gentle feminine wash. What are the key principles, suitable ingredients like surfactants (such as Coco-Betaine and Coco Wash™), and...

Cosmetics Facial Cleanser Gentle Formulation Intimate Area Application Surfactant pH Suitability
Posted by sj_ying
2014-07-01
Information and Availability Status of Myristyl Nicotinate (Pro-Niacin), Natto Gum, and Adenosine Complex

Could you please provide an update on the availability of **Pro-Niacin** and clarify its relationship with **Vitamin B3**? I also noticed that the INCI Name for **Myristyl...

Cosmetics Ingredient Availability Ingredient Function Ingredient Identification Raw Material Wrinkle Reduction
Posted by chanapa
2014-07-01
Availability of Pep-coll

When will the new stock of Pep-coll be available?

Cosmetics Product Availability Product Inquiry
Posted by tanik_fu
2014-07-01
Combining BHA with Vitamin C, Vitamin E, and Ferulic Acid

Can I use products containing Salicylic Acid (BHA) together with products containing Vitamin C, Vitamin E, and Ferulic Acid? If so, what is the recommended method, especially...

Cosmetics Acidic Formulation Compatibility Nighttime Use Product Layering Skin Irritation
Posted by omasign
2014-07-01
Sunscreen SPF Calculation and Nano Particle Safety

Regarding the sunscreen formula from your store that uses 5% TD and 5% Zinc, resulting in SPF 23: * How is this SPF value calculated? * If I increase the concentration by 1 or...

Cosmetics Nanotechnology SPF Boosting Skin Absorption Sun Protection Sunscreen Formulation
Posted by nook_ku69
2014-07-01
Adjusting Sodium Lactate (60% Liquid) Usage in Bar Soap

If I previously used Sodium Lactate powder (100% concentration) at a concentration of 4% in a bar soap formulation, how should I adjust the usage percentage when switching to...

Cosmetics Bar Soap Concentration Formulation Adjustment Solidification Usage Percentage
Posted by fai_for_work
2014-07-01
Calculating Filler Percentage in Powder Cleanser

How do I calculate the amount of filler (like corn starch or talc) to add to a powder cleanser base if I want the final product to contain a specific percentage of filler? For...

Cosmetics Amount Calculation Filler Ingredient Addition Powder Cleanser Usage Percentage
Posted by iloveclever
2014-06-30
Formulating Water-Based Sprays: Fragrance Percentage and Ingredient Function

I want to create a body and fabric spray and a pillow spray using water as the base. I plan to use Flora Solve™ Clear and Dipropylene glycol in the formulation. * What are the...

Cosmetics Fragrance Fixation Solubilizer Spray Usage Percentage Water-based Formulation
Posted by cram-croo
2014-06-30
Tinosorb M: Properties, FDA Status, and Formulation Considerations

What are the properties and formulation considerations for Tinosorb M, a hybrid sunscreen ingredient? Specifically, what is its status regarding approval by the US FDA, and is...

Cosmetics Chemical UV Filter Physical UV Filter Regulatory Compliance Sun Protection Sunscreen Formulation
Posted by panisara.kh
2014-06-30
Facial Cleansing Gel Formulation Issues and Alternative

I have questions about a facial cleansing gel formula. 1. Regarding my current formula, which contains ingredients such as Sodium Laureth Sulfate (SLS), Sodium Chloride,...

Cosmetics Clumping Cosmetic Formulation Facial Cleanser Ingredient Alternatives pH Adjustment
Posted by aerie_aerie
2014-06-30