Night Cream Formula for Dry Skin: Whitening, Dark Spots, Redness, Wrinkles - Ingredient Compatibility & Mixing

Okay, I understand you're asking for feedback on your updated nighttime skincare formula for dry, dull skin with dark spots, redness, and wrinkles, aiming for brighter, clearer skin and reduced imperfections. You've also asked about adding Jojoba Oil and requested detailed mixing instructions for a 50g batch.

Based on your updated list of ingredients and the previous discussion with the staff:

Feedback on Your Updated Formula:

1. Hi-Quercetin: Keeping Hi-Quercetin for a nighttime formula is appropriate, as the staff mentioned its potential to darken the formula, which is less of a concern for overnight use.
2. Licorice Extract: You've removed Licorice Extract as recommended by the staff, which is suitable given your skin type doesn't have issues with irritation or excess oiliness.
3. MSH White and Reservoir-Tech: The staff previously advised against using MSH White and Reservoir-Tech together due to a lack of compatibility testing. While you've kept both in your updated list, I strongly recommend following the staff's advice and removing MSH White. You already have several other potent whitening ingredients (Safe-B3, GlucoBright, TransWhite, Activated Resorcinol S, Hi-Quercetin, Willow Bark Extract), and removing MSH White eliminates the potential compatibility issue without significantly reducing the formula's whitening potential.
4. Multiple Whitening Agents: You've included a high concentration and variety of whitening agents. I understand you want to try a comprehensive approach due to previous experiences. While this combination targets multiple pathways for skin brightening and dark spot reduction, please be aware that using many active ingredients at high percentages can increase the risk of skin irritation, especially for dry skin. I recommend performing a patch test on a small area of skin before applying the formula to your entire face.
5. Moisturizing: You've slightly increased Rose Hip Oil and LipidSoft Lite and mentioned using a separate moisturizing cream and Pitera 100% beforehand. This layered approach should help address your dry skin concerns.
6. Jojoba Oil: Adding Jojoba Oil (3-4%) is a good idea for dry skin. Jojoba Oil is an excellent emollient that mimics the skin's natural sebum and can help improve the formula's moisturizing properties and skin feel. It is generally compatible with other cosmetic ingredients.

Regarding Adding Jojoba Oil:

Yes, adding 3-4% Jojoba Oil would be beneficial for your dry skin. If you add Jojoba Oil, you will need to reduce the amount of water in the formula to keep the total batch size at 50g. For example, adding 4% Jojoba Oil (which is 2g for a 50g batch) would mean reducing the water amount by 2g.

Detailed Mixing Instructions for 50g (Assuming your listed weights are correct and the remainder is Water):

Based on your listed weights for a 50g batch, the total weight of the ingredients you listed is 29.6g. The remaining amount is water, which is 50g - 29.6g = 20.4g.

Here is the detailed mixing procedure using the ingredients and weights you provided, following a non-heating method suitable for Satin Cream Maker:

Ingredients for 50g:

• Phase 1 (Water Phase):
  • Water: 20.4 g
  • Safe-B3™: 2.5 g
  • GlucoBright™: 2 g
  • TransWhite: 1 g
  • Activated Resorcinol S: 2.5 g
  • Disodium EDTA: 0.1 g
  • Hi-Quercetin: 0.5 g
  • Willow Bark Extract: 2.5 g
  • Reservoir-Tech: 1.5 g
• Phase 2 (Oil Phase):
  • MSH White Abs: 2 g (Note: Staff advised against combining with Reservoir-Tech. Consider removing this ingredient.)
  • Rose Hip Oil: 3.5 g
  • Bisabolol: 0.5 g
  • LipidSoft™ Lite: 2.5 g
  • Satin Cream Maker: 1 g
• Phase 3 (Final Phase):
  • Centella: 1 g
  • Ume Extract: 1.5 g
  • Repair Activator: 4 g
  • Mild Preserved: 0.5 g

Mixing Steps:

1. Weighing: Accurately weigh all ingredients using a precise scale.
2. Prepare Phase 1 (Water Phase): In a clean container, combine the Water, Safe-B3™, GlucoBright™, TransWhite, Activated Resorcinol S, Disodium EDTA, Hi-Quercetin, Willow Bark Extract, and Reservoir-Tech. Stir or mix gently until all powdered or water-soluble ingredients are completely dissolved and the mixture is uniform.
3. Prepare Phase 2 (Oil Phase): In a separate clean container, combine the MSH White Abs (if using), Rose Hip Oil, Bisabolol, LipidSoft™ Lite, and Satin Cream Maker. Mix these oil-based ingredients together until they are well combined.
4. Emulsification: Slowly add the Oil Phase mixture (Phase 2) into the Water Phase mixture (Phase 1) while continuously stirring or mixing. You can use a whisk or a small mixer. Continue mixing until the two phases are fully combined and a smooth, homogeneous cream is formed.
5. Add Phase 3 (Final Phase): Add the Centella, Ume Extract, Repair Activator, and Mild Preserved to the cream base. Mix thoroughly until these final ingredients are evenly dispersed throughout the cream.
6. Packaging: Transfer the finished cream into a clean, suitable container.

If you decide to add 4% Jojoba Oil (2g):

• Reduce the amount of Water in Phase 1 from 20.4g to 18.4g.
• Add 2g of Jojoba Oil to Phase 2 (Oil Phase) along with the other oil-based ingredients.
• Follow the rest of the mixing steps as described above.

This formula contains a potent blend of actives targeting multiple skin concerns. Remember to observe how your skin responds and adjust the formula or usage frequency if any irritation occurs.