Tula Skincare A+ Renewal Advanced Retinal & Peptides Serum Versus Rodan + Fields Redefine Intensive Renewing Serum

Tula Skincare A+ Renewal Advanced Retinal & Peptides Serum Versus Rodan + Fields Redefine Intensive Renewing Serum

This anti-aging serum is formulated around Retinal and Lactococcus Ferment Lysate to soften the look of wrinkles and refine skin texture.

This anti-aging serum is formulated around Retinal to soften the look of wrinkles and refine skin texture.

What's inside

Key Ingredients

Benefits

Concerns

Ingredients Side-by-side

Water

Propanediol

C15-19 Alkane

Glycerin

1,2-Hexanediol

Lactococcus Ferment Lysate

Pentylene Glycol

Cetyl Alcohol

Chlorella Vulgaris Extract

Vaccinium Macrocarpon Fruit Extract

Tridecapeptide-1

Ceramide AP

Ceramide As

Ceramide Ns

Ceramide EOP

Ceramide NP

Sodium Hyaluronate

Hydrolyzed Sodium Hyaluronate

Sodium Acetylated Hyaluronate

Sodium Hyaluronate Crosspolymer

Aloe Barbadensis Leaf Juice

Lactobacillus

Curcuma Longa Root Extract

Lactobacillus Ferment

Beta Vulgaris Root Extract

Retinal

Arginine

Diisostearyl Malate

Alpha-Glucan Oligosaccharide

Bisabolol

Inulin

Arachidyl Alcohol

Lactic Acid

Sclerotium Gum

Citric Acid

Behenyl Alcohol

Malic Acid

Polymnia Sonchifolia Root Juice

Arachidyl Glucoside

Hydrogenated Lecithin

Polyacrylate Crosspolymer-6

Cellulose Gum

Glucose

Calcium Chloride

Fructose

Cholesterol

Sodium Phytate

2,3-Butanediol

Calcium Alginate

Glyceryl Stearate

Lecithin

Cellulose

Sodium Hydroxide

Ethylhexylglycerin

Caprylyl Glycol

Maltodextrin

Xanthan Gum

Sodium Benzoate

Butylene Glycol

Sodium Chloride

Potassium Sorbate

Water, Propanediol, C15-19 Alkane, Glycerin, 1,2-Hexanediol, Lactococcus Ferment Lysate, Pentylene Glycol, Cetyl Alcohol, Chlorella Vulgaris Extract, Vaccinium Macrocarpon Fruit Extract, Tridecapeptide-1, Ceramide AP, Ceramide As, Ceramide Ns, Ceramide EOP, Ceramide NP, Sodium Hyaluronate, Hydrolyzed Sodium Hyaluronate, Sodium Acetylated Hyaluronate, Sodium Hyaluronate Crosspolymer, Aloe Barbadensis Leaf Juice, Lactobacillus, Curcuma Longa Root Extract, Lactobacillus Ferment, Beta Vulgaris Root Extract, Retinal, Arginine, Diisostearyl Malate, Alpha-Glucan Oligosaccharide, Bisabolol, Inulin, Arachidyl Alcohol, Lactic Acid, Sclerotium Gum, Citric Acid, Behenyl Alcohol, Malic Acid, Polymnia Sonchifolia Root Juice, Arachidyl Glucoside, Hydrogenated Lecithin, Polyacrylate Crosspolymer-6, Cellulose Gum, Glucose, Calcium Chloride, Fructose, Cholesterol, Sodium Phytate, 2,3-Butanediol, Calcium Alginate, Glyceryl Stearate, Lecithin, Cellulose, Sodium Hydroxide, Ethylhexylglycerin, Caprylyl Glycol, Maltodextrin, Xanthan Gum, Sodium Benzoate, Butylene Glycol, Sodium Chloride, Potassium Sorbate

Cyclopentasiloxane

Dimethicone

Polysilicone-11

Ethylhexyl Hydroxystearate

C12-15 Alkyl Benzoate

Palmitoyl Hexapeptide-14

Retinyl Palmitate

Hydroxyapatite

Bis-Ethylhexyl Hydroxydimethoxy Benzylmalonate

Ethoxydiglycol

Cyclopentasiloxane, Dimethicone, Polysilicone-11, Ethylhexyl Hydroxystearate, C12-15 Alkyl Benzoate, Retinal, Palmitoyl Hexapeptide-14, Retinyl Palmitate, Hydroxyapatite, Bis-Ethylhexyl Hydroxydimethoxy Benzylmalonate, Ethoxydiglycol

Alternatives

Ingredients Explained

These ingredients are found in both products.

Ingredients higher up in an ingredient list are typically present in a larger amount.

Retinal (aka retinaldehyde) is a form of retinoid that formulators use mainly as an antiaging and skin-renewing active.

What makes it special is its position in the retinoid family; skin converts it to retinoic acid (the prescription gold standard) in just one step.

Because retinal only requires 1 conversion step to become retinoic acid, it's the strongest over-the-counter retinoid. It also works at lower concentrations than retinol, since retinal is about 10x more bioavailable.

Studies back up its efficacy in skin:

A foundational trial showed that applying 0.05-0.5% retinal for 1-3 months produced a dose-dependent and significant increase in epidermal thickness + cell turnover markers.

And a head-to-head comparison of 0.05% retinal against a 0.05% retinoid acid found both formulations were effective for the basis of wrinkle/skin roughness features, but retinoic acid caused more local irritation.

More recent controlled trials confirm it improves wrinkles, dermal density, and firmness over 12-24 weeks, with significant improvements in skin texture and firmness (particularly with the higher 0.1% concentration).

Retinal also has one trick the other retinoids do not: it directly fights against acne bacteria since a clinical study showed retinaldehyde-treated areas displayed a significant decrease in counts of viable P. acnes.

This makes it a great pick for people who want to treat aging and breakouts.

Typical cosmetic use sits in the 0.05-0.1% range with 0.05% being the gentle starting point and 0.1% giving stronger results.

Like all retinoids, retinal works best with nightly use, a good moisturizer, and daytime sunscreen. It can cause some irritation so ease into it slowly rather than going all in.

The "ramp up" method works well: start with Retinal once a week to give your skin time to adjust, which keeps irritation low.

Slowly add more nights until you reach your goal frequency once your skin feels comfortable.

Retinoids also make your skin more sensitive to the sun in the first few weeks, so wear sunscreen every morning and protect your skin from direct sun while you build up tolerance.

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