Sunlight-induced Permanent Hair Dyeing
Chinese Journal of Polymer Science,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 17, 2025
Язык: Английский
Irradiation-induced hair graying in mice: an experimental model to evaluate the effectiveness of interventions targeting oxidative stress, DNA damage prevention, and cellular senescence
GeroScience,
Год журнала:
2024,
Номер
46(3), С. 3105 - 3122
Опубликована: Янв. 6, 2024
Abstract
Hair
graying,
also
known
as
canities
or
achromotrichia,
is
a
natural
phenomenon
associated
with
aging
and
influenced
by
external
factors
such
stress,
environmental
toxicants,
radiation
exposure.
Understanding
the
mechanisms
underlying
hair
graying
an
ideal
approach
for
developing
interventions
to
prevent
reverse
age-related
changes
in
regenerative
tissues.
induced
ionizing
(γ-rays
X-rays)
has
emerged
valuable
experimental
model
investigate
molecular
pathways
involved
this
process.
In
review,
we
examine
existing
evidence
on
radiation-induced
particular
focus
potential
role
of
cellular
senescence.
We
explore
current
understanding
aging,
delve
into
mechanisms,
highlight
unique
advantages
using
ionizing-irradiation–induced
research
model.
By
elucidating
involved,
aim
deepen
our
potentially
identify
novel
therapeutic
targets
address
phenotypic
change.
Язык: Английский
Recent omics advances in hair aging biology and hair biomarkers analysis
Ageing Research Reviews,
Год журнала:
2023,
Номер
91, С. 102041 - 102041
Опубликована: Авг. 25, 2023
Язык: Английский
Protective Effect of Conditioned Medium of Immortalized Human Stem Cells from Exfoliated Deciduous Teeth Against Hair Graying Caused by X-Ray Irradiation via Its Antioxidative Activity
Antioxidants,
Год журнала:
2025,
Номер
14(1), С. 109 - 109
Опубликована: Янв. 18, 2025
Hair
graying
is
one
of
the
common
visible
signs
human
aging,
resulting
from
decreased
or
abolished
melanogenesis
due
to
depletion
melanocyte
stem
cells
through
excess
accumulation
oxidative
stress.
Cell-free
therapy
using
a
conditioned
medium
(CM)
mesenchymal
has
been
highlighted
in
field
regenerative
medicine
owing
its
potent
therapeutic
effects
with
lower
regulatory
hurdles
and
safety
risk.
Recently,
we
demonstrated
that
CM
an
immortalized
cell
line
exfoliated
deciduous
teeth
(SHED)
protective
against
mouse
model
ulcer
formation
via
antioxidative
angiogenic
activities
mediated
by
HGF
VEGF.
However,
date,
no
effective
treatments
for
hair
have
developed,
effect
SHED-CM
on
remains
unknown.
In
this
study,
investigated
caused
X-ray
irradiation.
Repetitive
subcutaneous
administrations
greatly
suppressed
development
graying,
when
compared
control
medium,
reduced
cutaneous
expression
8-hydroxy-2′-deoxyguanosine,
major
product
DNA
damage
induced
reactive
oxygen
species.
Consistent
these
vivo
results,
significantly
inhibited
death
irradiation
melanoma
B16F10
cells.
Immunodepletion
VEGF
revealed
inhibition
was
suppression
generation
species,
which
mainly
probably
These
results
suggest
activity.
Язык: Английский
Functional Performance and Safety Evaluation of Optimized Plant-Based Dye Mixtures for Intense Hair Coloration
Cosmetics,
Год журнала:
2025,
Номер
12(2), С. 78 - 78
Опубликована: Апрель 14, 2025
This
study
aimed
to
develop
a
sustainable
and
safe
alternative
chemical
hair
dyes
by
exploring
the
functional
performance
safety
evaluation
of
herbal
mixtures.
Natural
were
extracted
from
Lawsonia
inermis
leaves,
Clitoria
ternatea
flowers,
Indigofera
tinctoria
leaves
using
an
eco-friendly
extraction
method
with
deionized
water
ultrasonication.
The
ratios
these
natural
optimized
statistical
tools,
specifically
Minitab,
determine
most
effective
formulation.
profiles
dyeing
individual
their
combinations
evaluated
focus
on
color
intensity,
stability,
resistance
washing
light
exposure.
optimal
mixture,
ratio
2:2:1:1
(L.
inermis/C.
ternatea/I.
tinctoria/water),
demonstrated
highest
absorbance
lowest
lightness,
indicating
darkest
profile.
When
applied
for
30
min,
this
combination
yielded
long-lasting
intense
dark
color.
Further
testing
hen’s
egg
chorioallantoic
membrane
test
confirmed
favorable
profile,
examination
under
scanning
electron
microscope
showed
no
damage
cuticle,
that
formulation
is
safer
than
dyes.
Therefore,
mixture
promise
as
synthetic
dyes,
further
development
was
suggested.
Язык: Английский
Acitretin-Induced Repigmentation of Gray Hair: A Case Report
Cureus,
Год журнала:
2024,
Номер
unknown
Опубликована: Апрель 14, 2024
Acitretin
is
an
oral
retinoid
with
alopecia
as
a
possible
adverse
effect.
However,
repigmentation
of
the
hair
color
after
acitretin
not
well-documented
phenomenon.
Herein,
we
introduce
case
where
patient's
darkened
course
acitretin.
Язык: Английский
Intrinsic and Extrinsic Factors Associated with Hair Graying (Canities) and Therapeutic Potential of Plant Extracts and Phytochemicals
Applied Sciences,
Год журнала:
2024,
Номер
14(17), С. 7450 - 7450
Опубликована: Авг. 23, 2024
This
review
aims
to
gain
insight
into
the
major
causes
of
hair
graying
(canities)
and
how
plant-derived
extracts
phytochemicals
could
alleviate
this
symptom.
Research
articles
on
human
were
searched
selected
using
PubMed,
Web
Science,
Google
Scholar
databases.
We
first
examined
intrinsic
extrinsic
factors
associated
with
graying,
such
as
reduced
capacity
melanin
synthesis
transfer,
exhaustion
melanocyte
stem
cells
(MSCs)
melanocytes,
genetics
epigenetics,
race,
gender,
family
history,
aging,
oxidative
stress,
stress
hormones,
systematic
disorders,
nutrition,
smoking,
alcohol
consumption,
lifestyle,
medications,
environmental
factors.
also
various
plants
that
have
shown
a
potential
interfere
onset
or
progression
at
different
levels
from
in
vitro
studies
clinical
studies:
extract
Polygonum
multiflorum
its
components,
2,3,5,4′-tetrahydroxystilbene-2-O-β-D-glucoside
emodin;
Eriodictyon
angustifolium
flavonoid
compounds,
hydroxygenkwanin,
sterubin,
luteolin;
Adzuki
beans
(Vigna
angularis),
Fuzhuan
brick
tea
(Camellia
sinensis),
Gynostemma
pentaphyllum;
bixin,
carotenoid
compound
found
Bixa
orellana;
rhynchophylline,
an
alkaloid
certain
Uncaria
species.
Experimental
evidence
supports
notion
plant
by
enhancing
MSC
maintenance
function,
reducing
due
physiological
influences,
managing
secretion
action
hormones
appropriate
level.
It
is
suggested
may
be
reversible
through
following
tactical
approaches:
selective
targeting
p38
mitogen-activated
protein
kinase
(MAPK)–microphthalmia-associated
transcription
factor
(MITF)
axis,
nuclear
erythroid
2-related
2
(NRF2),
norepinephrine–β2
adrenergic
receptor
(β2AR)–protein
A
(PKA)
signaling
pathway.
Язык: Английский
‘Hair Color Repigmentation in the Recipient Area‘: A Newly Recognized Phenomenon after Hair Transplantation
Cardiometry,
Год журнала:
2024,
Номер
31, С. 89 - 98
Опубликована: Май 25, 2024
Background:
Hair
color
repigmentation
in
the
recipient
area
is
a
newly
detected
phenomena
after
hair
transplantation.
It’s
especially
patients
with
gray
or
white
hairs
donor
area,
which
transferring
these
follicles
to
stimulate
them
regain
their
original
blackish
color,
this
may
occur
due
various
stimulants
that
release
during
wound
healing
of
slits
transplantation
trigger
melanin
production
within
melanocyte
inside
roots
and
promote
area.
Aim:
The
aim
study
was
detect
frequency
Patients
Methods:
In
retrospective
observational
study,
we
thirty-four
develop
restoration
undergoing
throughout
1-year
follow-up
period.
1438
undergo
transplant
between
August
2021
May
2023
were
enrolled
among
34
vulnerable
phenomena,
each
patient
assessed
both
objectively
subjectively
evaluate
occurrence
phenomenon
percentage
restore
transplanted
Results:
Thirty-four
completed
evaluation
score
includes
(percentage
show
transplantation,
change
degree
area)
patient’s
satisfaction
showed
greater
positive
results
majority
Conclusion:
surgery.
Most
We
think
detecting
will
give
us
insight
about
how
can
our
by
understanding
mechanism
melanocytes
root
ability
Язык: Английский
Prevalence and Predictors of Premature Graying of Hair Before the Age of 30: A Cross‐Sectional Study in Saudi Arabia
Journal of Cosmetic Dermatology,
Год журнала:
2024,
Номер
unknown
Опубликована: Окт. 9, 2024
ABSTRACT
Background
Graying
is
an
inherent
and
unavoidable
consequence
of
the
aging
process,
impacting
individuals
all
genders.
There
are
limited
studies
in
Saudi
Arabia
that
have
examined
prevalence
predictors
premature
graying
hair
(PGH).
Objectives
This
study
aims
to
explore
PGH
before
age
30
among
population
Arabia.
Methods
a
cross‐sectional
online
survey
was
conducted
between
July
2023
February
2024
Binary
logistic
regression
analysis
used
identify
risk
factors
having
gray
30.
Results
A
total
1193
participants
were
involved
this
study.
significant
portion
respondents
reported
(55.9%).
The
younger
(younger
than
44
years),
smokers,
those
who
comorbidities,
anxiety,
depression,
family
history
years,
dry
scalp,
suffer
from
vitamin
or
mineral
deficiencies,
loss
due
immune
diseases
(such
as
alopecia),
use
minoxidil
rosemary
for
more
likely
years
(
p
<
0.05).
Conclusion
highlighted
high
rate
associated
Identified
include
genetic,
health,
lifestyle
factors.
Healthcare
professionals
decision
makers
advised
promote
awareness
general
public
on
its
enhance
prevention
PGH.
Public
health
initiatives
campaigns
smoking
cessation,
healthy
nutrition,
mental
health.
Язык: Английский
Premature hair graying: a multifaceted phenomenon
International Journal of Dermatology,
Год журнала:
2024,
Номер
unknown
Опубликована: Дек. 19, 2024
Premature
hair
graying
(PHG)
is
the
early
loss
of
natural
color,
influenced
by
genetic,
biological,
and
environmental
factors.
This
review
discusses
significant
psychological
impacts
PHG
explores
its
underlying
mechanisms,
related
health
conditions,
available
treatments.
The
examines
roles
genetics,
oxidative
stress,
lifestyle
factors
such
as
smoking
diet
in
premature
graying.
It
also
considers
associated
medical
conditions
current
emerging
treatment
options.
overview
aims
to
improve
understanding
broader
implications.
Язык: Английский